{"id":10253,"date":"2026-10-06T12:54:14","date_gmt":"2026-10-06T12:54:14","guid":{"rendered":"https:\/\/www.macsonik.com\/blog\/?p=10253"},"modified":"2026-10-06T12:59:12","modified_gmt":"2026-10-06T12:59:12","slug":"legacy-outlook-for-mac","status":"publish","type":"post","link":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/","title":{"rendered":"Legacy Outlook for Mac End of Life: Complete Guide [2026]"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;10253&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Legacy Outlook for Mac End of Life: Complete Guide [2026]&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>\n<div style=\"background: linear-gradient(135deg, #FAFDFF, #DDF2FF); border-left: 5px solid #1E4258; border-radius: 12px; padding: 20px 25px; margin: 15px 0; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08); transition: all 0.3s ease; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; color: #2a2a2a;\">\n<p style=\"font-size: 15px; line-height: 1.6; margin: 0;\"><strong> User Query:<\/strong><br \/><span style=\"font-weight: 400;\">I still use the old Outlook on my Mac for my office mail. I heard that Legacy Outlook for Mac is ending in October 2026. Will my emails disappear? How to transfer to the new Outlook, and how to save my old emails safely?<\/span><\/p>\n<\/div>\n<p class=\"user-query\"><strong class=\"text-danger\">Introduction:<\/strong> Many people open their mail app every day and never think about what comes next, and some still use Legacy Outlook for Mac without knowing the risk. From October 2026, Legacy Microsoft Outlook for Mac will stop working with Exchange Online mailboxes, which means no sending, no receiving, and no syncing. This can stop your daily work in just one day. In this blog, you will learn the simple steps to switch from Legacy Outlook to New Outlook, and how <a href=\"https:\/\/www.macsonik.com\/olm\/converter\/\" target=\"_blank\"><strong>MacSonik OLM Converter <\/strong><\/a>helps you move your OLM data to PST safely. By the end, your emails will be safe, and your work will keep running.<\/span><\/p>\n<div class=\"row justify-content-center ms_btn_sec my-3\">\n<div class=\"col-md-6\">\n<ul id=\"myTab\" class=\"nav nav-tabs justify-content-center mb-3\" role=\"tablist\">\n<li class=\"nav-item\"><a id=\"mac-tab\" class=\"nav-link px-4 rounded-0 text-dark active\" role=\"tab\" href=\"#mac\" data-toggle=\"tab\" aria-controls=\"mac\" aria-selected=\"true\"><i class=\"icon-apple\"><\/i> Mac<\/a><\/li>\n<li class=\"nav-item\"><a id=\"windows-tab\" class=\"nav-link px-4 rounded-0 text-dark\" role=\"tab\" href=\"#windows\" data-toggle=\"tab\" aria-controls=\"windows\" aria-selected=\"false\"><i class=\"icon-windows\"><\/i> Windows<\/a><\/li>\n<\/ul>\n<div id=\"myTabContent\" class=\"tab-content text-center\">\n<div id=\"mac\" class=\"tab-pane fade show active\" role=\"tabpanel\" aria-labelledby=\"mac-tab\"><a class=\"btn btn-download mr-3\" href=\"https:\/\/www.macsonik.com\/dl\/Macsonik-olm-converter-tool.dmg\"><i class=\"icon-download-1\"><\/i> Download Now<\/a><a class=\"btn btn-buy\" href=\"https:\/\/www.macsonik.com\/olm\/converter\/buy.php\"><i class=\"icon-basket\"><\/i> Purchase Now<\/a><br \/>\n<\/div>\n<div id=\"windows\" class=\"tab-pane fade\" role=\"tabpanel\" aria-labelledby=\"windows-tab\"><a class=\"btn btn-download mr-3\" href=\"https:\/\/www.macsonik.com\/dl\/Macsonik-olm-converter-tool-windows.exe\"><i class=\"icon-download-1\"><\/i> Download Now<\/a><a class=\"btn btn-buy\" href=\"https:\/\/www.macsonik.com\/olm\/converter\/buy.php\"><i class=\"icon-basket\"><\/i> Purchase Now<\/a><br \/>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87_1 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0a0a0a;color:#0a0a0a\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0a0a0a;color:#0a0a0a\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Why_Microsoft_Is_Ending_the_Old_Outlook_for_Mac\" >Why Microsoft Is Ending the Old Outlook for Mac<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Who_Is_Affected\" >Who Is Affected?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Manual_Method_to_Switch_from_Legacy_Outlook_to_New_Outlook_on_Mac\" >Manual Method to Switch from Legacy Outlook to New Outlook on Mac<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Limitations_of_the_Manual_Method\" >Limitations of the Manual Method<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Professional_Way_to_Save_Legacy_Outlook_for_Mac_Emails_MacSonik_OLM_Converter\" >Professional Way to Save Legacy Outlook for Mac Emails: MacSonik OLM Converter<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Steps_to_Convert_OLM_to_PST_with_the_Tool\" >Steps to Convert OLM to PST with the Tool<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Manual_Method_vs_MacSonik_OLM_Converter\" >Manual Method vs MacSonik OLM Converter<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Conclusion\" >Conclusion<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Why_Microsoft_Is_Ending_the_Old_Outlook_for_Mac\"><\/span>Why Microsoft Is Ending the Old Outlook for Mac<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li >The old app pulls your Exchange Online mail through a service called Exchange Web Services, or EWS. Microsoft has set October 1, 2026, as the date when EWS will be turned off. The Legacy Outlook for Mac End date depends on this service, so once EWS goes away, the old app cannot connect anymore.<\/li>\n<li >The new Outlook for Mac uses a newer connection that is faster and safer. Microsoft also says that over 95% of Microsoft 365 users have already made the switch. So the old version of Outlook for Mac from Microsoft has few users left, but those users will notice the change quickly.<\/li>\n<li >If you use Exchange Online, the old app will not be able to connect to your mailbox after the deadline. You will not be able to send, receive, or sync mail with it. So it is better to act before the app stops, not after.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Who_Is_Affected\"><\/span>Who Is Affected?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Not everyone gets hit on the same day. This is how Microsoft explains the support dates:<\/p>\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<td>\n<p><strong>License or account type<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Legacy Outlook for Mac<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>New Outlook for Mac<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Microsoft 365 business and enterprise plans (Exchange Online)<\/p>\n<\/td>\n<td>\n<p>Support ends October 2026<\/p>\n<\/td>\n<td>\n<p>Supported<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Microsoft 365 business and enterprise plans (Exchange SE On-Premises)<\/p>\n<\/td>\n<td>\n<p>Support ends October 9, 2029<\/p>\n<\/td>\n<td>\n<p>Supported<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Non-subscription versions (Outlook 2024 and later, Office Home &amp; Business 2024 and later, App Store version)<\/p>\n<\/td>\n<td>\n<p>Not supported<\/p>\n<\/td>\n<td>\n<p>Supported<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Manual_Method_to_Switch_from_Legacy_Outlook_to_New_Outlook_on_Mac\"><\/span>Manual Method to Switch from Legacy Outlook to New Outlook on Mac<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The manual method only switches the app. It does not back up your emails, check your old data, or move it to Windows. So if your mailbox has local data, or you plan to move to Windows, the manual way alone is risky.<\/p>\n<p>Here are the steps, and where they fall short.<\/p>\n<ul>\n<li >Open Legacy Outlook for Mac on your Mac.<\/li>\n<li >Find the Legacy Outlook toggle. Turn it off.<\/li>\n<li >Then turn it back on. Then sign in to your account.<\/li>\n<li >While you&#8217;re waiting for your folders to sync, go ahead and check your mail.<\/li>\n<\/ul>\n<p>If you don&#8217;t see that option, you&#8217;re probably running an older version. So go to Help, then Check for Updates, or download the latest Outlook from the Apple App Store, and try again.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Limitations_of_the_Manual_Method\"><\/span>Limitations of the Manual Method<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li >It only helps if you want to stay with Outlook for Mac.<\/li>\n<li >It is not going to transfer your data to Outlook for Windows.<\/li>\n<li >You need to make the backup yourself; the feature does not make it for you&nbsp;<\/li>\n<li >In case the option is missing, you have to update the application.<\/li>\n<li >Items saved only on your Mac need extra care, since there is no server copy.<\/li>\n<\/ul>\n<p>So if you want to go to Windows or keep your old emails in a format that opens anywhere, you need a different solution.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Professional_Way_to_Save_Legacy_Outlook_for_Mac_Emails_MacSonik_OLM_Converter\"><\/span>Professional Way to Save Legacy Outlook for Mac Emails: MacSonik OLM Converter<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>OLM is the file format of Outlook for Mac, and Outlook for Windows cannot open it directly. This is where <strong>MacSonik OLM Converter<\/strong> helps. It can read OLM files independently, so there&#8217;s no need to have Outlook for Mac to open them. It can save your data as PST, PDF, MBOX, etc., and send it directly to Gmail or Microsoft 365. As a safe way of retaining the old emails for those who are facing the end of Outlook for Mac, it&#8217;s an appropriate choice.<\/p>\n<p><strong>Here is what the tool gives you:<\/strong><\/p>\n<ul>\n<li >It moves emails with their attachments, plus contacts, calendars, and tasks, from your Legacy Outlook for Mac OLM file..<\/li>\n<li >It preserves the folder structure along with other email properties.<\/li>\n<li >The tool helps to convert single or multiple OLM files.<\/li>\n<li >The Tool displays a preview of all the mailbox items before exporting.<\/li>\n<li >It provides various filter options to select the desired emails based on a date range.<\/li>\n<li >Used to search for specific emails and skip unwanted emails.<\/li>\n<li >Splits the PST files into smaller PST files based on the desired size.<\/li>\n<li >It works on the local machine without connecting to the internet.<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"Steps_to_Convert_OLM_to_PST_with_the_Tool\"><\/span>Steps to Convert OLM to PST with the Tool<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li ><strong>Download and install the tool on your Mac.&nbsp;<\/strong><\/li>\n<\/ul>\n<ul>\n<li >Click Select File(s) to add one OLM file, or Select Folder to add a full folder. You can also drag and drop. Then click Continue.<\/li>\n<\/ul>\n<ul>\n<li >First, choose the OLM file that you want to convert, then go to the next step.<\/li>\n<\/ul>\n<ul>\n<li >Open the folder. Look at the structure inside. Click on each item to see a preview. If the preview doesn&#8217;t show up, choose the Open in Browser option.<\/li>\n<\/ul>\n<ul>\n<li >Select PST as the format to save the files.<\/li>\n<\/ul>\n<ul>\n<li >Apply filters as per your requirements from general settings and advanced controls.<\/li>\n<\/ul>\n<ul>\n<li >Then Click Start Export. When it is done, open Outlook for Windows and import the PST file.<\/li>\n<\/ul>\n<p>If you want to move this data straight to the cloud, you can also read our blog on how to <a href=\"https:\/\/www.macsonik.com\/blog\/import-olm-file-to-office-365\/\" target=\"_blank\">import OLM to Office 365<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Manual_Method_vs_MacSonik_OLM_Converter\"><\/span>Manual Method vs MacSonik OLM Converter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<td>\n<p><strong>Factor<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Manual Method<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>MacSonik OLM Converter<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Cost<\/p>\n<\/td>\n<td>\n<p>Free<\/p>\n<\/td>\n<td>\n<p>Free trial; full version is paid<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Best for<\/p>\n<\/td>\n<td>\n<p>Staying on Outlook for Mac<\/p>\n<\/td>\n<td>\n<p>Moving to Windows or saving old data<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Backup<\/p>\n<\/td>\n<td>\n<p>You export the OLM yourself.<\/p>\n<\/td>\n<td>\n<p>Saves OLM data as PST, PDF, MBOX, and more.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Needs Outlook for Mac<\/p>\n<\/td>\n<td>\n<p>Yes, it works only inside Outlook for Mac&nbsp;<\/p>\n<\/td>\n<td>\n<p>No, it opens OLM files on its own&nbsp;<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Preview before moving<\/p>\n<\/td>\n<td>\n<p>Not available&nbsp;<\/p>\n<\/td>\n<td>\n<p>Yes, you can see emails and attachments first&nbsp;<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Date filter and duplicate removal<\/p>\n<\/td>\n<td>\n<p>Not available&nbsp;<\/p>\n<\/td>\n<td>\n<p>Get particular emails by applying a date filter.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Split large PST files<\/p>\n<\/td>\n<td>\n<p>Not available&nbsp;<\/p>\n<\/td>\n<td>\n<p>Helps break a big PST into smaller ones&nbsp;<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Many files at once<\/p>\n<\/td>\n<td>\n<p>One at a time&nbsp;<\/p>\n<\/td>\n<td>\n<p>Convert many OLM files together in one go.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"user-query\"><strong class=\"text-danger\">Real-world scenario<\/strong><br \/>\nThink of an office with a small team that uses Outlook for Mac on every computer. Their IT person hears that the Microsoft Legacy Outlook for Mac is ending in October. She first checks which people use Exchange Online. Then she exports an OLM file from each Mac and keeps it as a backup. She switches most users to the new Outlook. For two people who switch to Windows laptops, she uses MacSonik OLM Converter to turn their OLM files into PST format. Then she imports the converted files into Outlook for Windows. Nobody loses a single email, and the work goes on as normal.<br \/>\n<strong>Note: <\/strong>For a detailed explanation, go through the <a href=\"https:\/\/www.macsonik.com\/olm\/converter\/guide.php\" target=\"_blank\">step-by-step guide<\/a>, which you can use to easily use the tool.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Legacy Outlook for Mac End of Life is not far away now, and for Exchange Online users, it has already started. The easiest way is to move from Legacy Outlook to the new Outlook, but before that, take a backup of your OLM file so your data stays safe. If you want to move to Windows or save your emails in PST and other formats, MacSonik OLM Converter does the work without Outlook. A little work today can save you a big problem tomorrow.<\/p>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><h4 class=\"faq_heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<div class=\"schema-faq-section\" id=\"faq-question-1791291038601\"><strong class=\"schema-faq-question\">Q.1. How to switch from Legacy Outlook to New Outlook on Mac?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> Launch Legacy Outlook on your Mac and switch off the Legacy Outlook option. The app restarts, so just sign in again. Go to the Help menu and click Check for Updates, or update Outlook from the App Store, then try again.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291046485\"><strong class=\"schema-faq-question\">Q.2. How to backup Legacy Outlook for Mac emails?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> First, save your mailbox as an OLM file using the Export option in Outlook for Mac, and keep a copy somewhere safe. and also Our tool can turn that OLM file into PST, PDF, MBOX, and more.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291059072\"><strong class=\"schema-faq-question\">Q.3. What are the best alternatives to legacy email software on Mac for business use?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> The new Outlook for Mac is the first choice for Microsoft 365 users. Businesses can also use Outlook for Windows, Gmail, or Thunderbird, and move old data with an OLM converter.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291071414\"><strong class=\"schema-faq-question\">Q.4. What are the implications of using an older email application on a Mac?<\/strong> <p class=\"schema-faq-answer\">Ans. The old app stops getting new updates, and it no longer gets non-critical security features either. For Exchange Online users, the bigger problem is that the old app stops connecting to the mailbox.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291085430\"><strong class=\"schema-faq-question\">Q.5. How can I access old email archives in legacy email clients on Mac?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> Export the archive as an OLM file. Then you can open it in the new app, or load it in MacSonik OLM Converter, preview the items without Outlook, and save them as PST, PDF, or MBOX.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291097977\"><strong class=\"schema-faq-question\">Q.6. Where can I download older versions of email software compatible with Mac?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> We would not suggest this, because old installers from unknown websites can be risky. The safer way is to update through Microsoft AutoUpdate or the App Store.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291109256\"><strong class=\"schema-faq-question\">Q.7. Will my contacts and calendar migrate to the New Outlook automatically?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> Server accounts, like Exchange or Microsoft 365, will bring back your contacts and calendar after you sign in. If your data is saved on your Mac, make sure to take a backup first. Our tool can also move the data from an OLM file.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291122679\"><strong class=\"schema-faq-question\">Q.8. What should businesses do before Legacy Outlook for Mac reaches end of support?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans.<\/strong> Check which accounts use Exchange Online, save OLM backups, update the software, and test with a few users first. Then tell your staff the date.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1791291135991\"><strong class=\"schema-faq-question\">Q.9. Can I continue using Legacy Outlook after the end-of-support date?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Not with Exchange Online mailboxes because the connection stops in October 2026. Exchange on-premises and Office LTSC 2024 users can keep using it with security updates until October 9, 2029.<br><\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>User Query:I still use the old Outlook on my Mac for my office mail. I heard that Legacy Outlook for<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/\">Read More<\/a><\/p>\n","protected":false},"author":10,"featured_media":10258,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-10253","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-olm-converter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Legacy Outlook for Mac End of Life: Complete Guide [2026]<\/title>\n<meta name=\"description\" content=\"Learn about Legacy Outlook for Mac end of life in 2026. Discover key changes, risks, alternatives, and migration tips to keep your email data secure.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Legacy Outlook for Mac End of Life: Complete Guide [2026]\" \/>\n<meta property=\"og:description\" content=\"Learn about Legacy Outlook for Mac end of life in 2026. 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Her research on downloading emails from webmail is outstanding. She has given the solution to download emails from webmail clients to a Mac device with all the mailbox items. She\u2019s been into webmail solutions since 2010. In her free time, she reads books and writes technical blogs.\",\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/author\\\/ameliajames\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291038601\",\"position\":1,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291038601\",\"name\":\"Q.1. How to switch from Legacy Outlook to New Outlook on Mac?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> Launch Legacy Outlook on your Mac and switch off the Legacy Outlook option. The app restarts, so just sign in again. Go to the Help menu and click Check for Updates, or update Outlook from the App Store, then try again.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291046485\",\"position\":2,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291046485\",\"name\":\"Q.2. How to backup Legacy Outlook for Mac emails?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> First, save your mailbox as an OLM file using the Export option in Outlook for Mac, and keep a copy somewhere safe. and also Our tool can turn that OLM file into PST, PDF, MBOX, and more.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291059072\",\"position\":3,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291059072\",\"name\":\"Q.3. What are the best alternatives to legacy email software on Mac for business use?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> The new Outlook for Mac is the first choice for Microsoft 365 users. Businesses can also use Outlook for Windows, Gmail, or Thunderbird, and move old data with an OLM converter.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291071414\",\"position\":4,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291071414\",\"name\":\"Q.4. What are the implications of using an older email application on a Mac?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ans. The old app stops getting new updates, and it no longer gets non-critical security features either. For Exchange Online users, the bigger problem is that the old app stops connecting to the mailbox.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291085430\",\"position\":5,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291085430\",\"name\":\"Q.5. How can I access old email archives in legacy email clients on Mac?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> Export the archive as an OLM file. Then you can open it in the new app, or load it in MacSonik OLM Converter, preview the items without Outlook, and save them as PST, PDF, or MBOX.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291097977\",\"position\":6,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291097977\",\"name\":\"Q.6. Where can I download older versions of email software compatible with Mac?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> We would not suggest this, because old installers from unknown websites can be risky. The safer way is to update through Microsoft AutoUpdate or the App Store.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291109256\",\"position\":7,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291109256\",\"name\":\"Q.7. Will my contacts and calendar migrate to the New Outlook automatically?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> Server accounts, like Exchange or Microsoft 365, will bring back your contacts and calendar after you sign in. If your data is saved on your Mac, make sure to take a backup first. Our tool can also move the data from an OLM file.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291122679\",\"position\":8,\"url\":\"https:\\\/\\\/www.macsonik.com\\\/blog\\\/legacy-outlook-for-mac\\\/#faq-question-1791291122679\",\"name\":\"Q.8. What should businesses do before Legacy Outlook for Mac reaches end of support?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans.<\\\/strong> Check which accounts use Exchange Online, save OLM backups, update the software, and test with a few users first. 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Her research on downloading emails from webmail is outstanding. She has given the solution to download emails from webmail clients to a Mac device with all the mailbox items. She\u2019s been into webmail solutions since 2010. In her free time, she reads books and writes technical blogs.","url":"https:\/\/www.macsonik.com\/blog\/author\/ameliajames\/"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291038601","position":1,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291038601","name":"Q.1. How to switch from Legacy Outlook to New Outlook on Mac?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> Launch Legacy Outlook on your Mac and switch off the Legacy Outlook option. The app restarts, so just sign in again. Go to the Help menu and click Check for Updates, or update Outlook from the App Store, then try again.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291046485","position":2,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291046485","name":"Q.2. How to backup Legacy Outlook for Mac emails?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> First, save your mailbox as an OLM file using the Export option in Outlook for Mac, and keep a copy somewhere safe. and also Our tool can turn that OLM file into PST, PDF, MBOX, and more.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291059072","position":3,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291059072","name":"Q.3. What are the best alternatives to legacy email software on Mac for business use?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> The new Outlook for Mac is the first choice for Microsoft 365 users. Businesses can also use Outlook for Windows, Gmail, or Thunderbird, and move old data with an OLM converter.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291071414","position":4,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291071414","name":"Q.4. What are the implications of using an older email application on a Mac?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Ans. The old app stops getting new updates, and it no longer gets non-critical security features either. For Exchange Online users, the bigger problem is that the old app stops connecting to the mailbox.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291085430","position":5,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291085430","name":"Q.5. How can I access old email archives in legacy email clients on Mac?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> Export the archive as an OLM file. Then you can open it in the new app, or load it in MacSonik OLM Converter, preview the items without Outlook, and save them as PST, PDF, or MBOX.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291097977","position":6,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291097977","name":"Q.6. Where can I download older versions of email software compatible with Mac?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> We would not suggest this, because old installers from unknown websites can be risky. The safer way is to update through Microsoft AutoUpdate or the App Store.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291109256","position":7,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291109256","name":"Q.7. Will my contacts and calendar migrate to the New Outlook automatically?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> Server accounts, like Exchange or Microsoft 365, will bring back your contacts and calendar after you sign in. If your data is saved on your Mac, make sure to take a backup first. Our tool can also move the data from an OLM file.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291122679","position":8,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291122679","name":"Q.8. What should businesses do before Legacy Outlook for Mac reaches end of support?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans.<\/strong> Check which accounts use Exchange Online, save OLM backups, update the software, and test with a few users first. Then tell your staff the date.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291135991","position":9,"url":"https:\/\/www.macsonik.com\/blog\/legacy-outlook-for-mac\/#faq-question-1791291135991","name":"Q.9. Can I continue using Legacy Outlook after the end-of-support date?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans<\/strong>. Not with Exchange Online mailboxes because the connection stops in October 2026. Exchange on-premises and Office LTSC 2024 users can keep using it with security updates until October 9, 2029.<br>","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/posts\/10253","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/comments?post=10253"}],"version-history":[{"count":7,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/posts\/10253\/revisions"}],"predecessor-version":[{"id":10262,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/posts\/10253\/revisions\/10262"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/media\/10258"}],"wp:attachment":[{"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/media?parent=10253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/categories?post=10253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.macsonik.com\/blog\/wp-json\/wp\/v2\/tags?post=10253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}