{"id":19708,"date":"2025-11-10T07:33:07","date_gmt":"2025-11-10T07:33:07","guid":{"rendered":"https:\/\/www.sysinfotools.com\/blog\/?p=19708"},"modified":"2026-07-24T06:49:07","modified_gmt":"2026-07-24T06:49:07","slug":"import-olm-to-imap-server","status":"publish","type":"post","link":"https:\/\/www.sysinfotools.com\/blog\/import-olm-to-imap-server\/","title":{"rendered":"How to Import OLM to IMAP Server on Windows &#038; Mac"},"content":{"rendered":"<div class=\"block_sum\">\n  <p>Moving Outlook data across platforms isn&rsquo;t as simple as it should be because when you are switching from Mac, you need to be careful. Whether you are moving to another email client or centralizing data on a mail server, the practical task is to import OLM to IMAP server. However, due to the nature of OLM files, they are bound to Outlook for Mac and can&rsquo;t be directly imported to an IMAP server. This guide will explain to you how the import can be formed freely or with an <a href=\"https:\/\/www.sysinfotools.com\/olm-converter.php\"><strong>OLM Converter<\/strong><\/a> in an efficient, secure, and reliable manner.<\/p>\n<div class=\"blog-btn\">\n<ul id=\"db-btn-container\" class=\"nav nav-tabs mt-4\" role=\"tablist\">\n<li class=\"nav-item\"><a id=\"windows-tab\" class=\"nav-link active\" role=\"tab\" href=\"#windows\" data-toggle=\"tab\" aria-controls=\"windows\" aria-selected=\"true\"><i class=\"icon-windows\"><\/i> Windows<\/a><\/li>\n<li class=\"nav-item\"><a id=\"mac-tab\" class=\"nav-link\" role=\"tab\" href=\"#mac\" data-toggle=\"tab\" aria-controls=\"mac\" aria-selected=\"false\"><i class=\"icon-apple\"><\/i> Mac<\/a><\/li>\n<li class=\"nav-item\"><a id=\"linux-tab\" class=\"nav-link\" role=\"tab\" href=\"#linux\" data-toggle=\"tab\" aria-controls=\"linux\" aria-selected=\"false\"><i class=\"icon-linux\"><\/i> Linux<\/a><\/li>\n<\/ul>\n<div id=\"db-btn-containerContent\" class=\"tab-content my-2\">\n<div id=\"windows\" class=\"tab-pane fade active show\" role=\"tabpanel\" aria-labelledby=\"windows-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/Sysinfo-Olm-Converter-Win.exe\"><i class=\"icon-windows\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/olm-converter.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<div id=\"mac\" class=\"tab-pane fade\" role=\"tabpanel\" aria-labelledby=\"mac-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/Sysinfo-Olm-To-Pst-Converter_mac-demo.dmg\"><i class=\"icon-apple\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/mac-olm-converter.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<div id=\"linux\" class=\"tab-pane fade\" role=\"tabpanel\" aria-labelledby=\"linux-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/Sysinfo-Linux-OLM-Converter.sh\"><i class=\"icon-linux\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/linux-olm-converter.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/div>\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: #999;color:#999\" 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: #999;color:#999\" 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.sysinfotools.com\/blog\/import-olm-to-imap-server\/#Brief_Understanding_of_OLM_to_IMAP_Migration\" >Brief Understanding of OLM to IMAP Migration<\/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.sysinfotools.com\/blog\/import-olm-to-imap-server\/#Ultimate_Solutions_to_Import_OLM_to_IMAP_Server\" >Ultimate Solutions to Import OLM to IMAP Server<\/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.sysinfotools.com\/blog\/import-olm-to-imap-server\/#Cost-Free_Open_OLM_File_in_IMAP_Server\" >Cost-Free Open OLM File in IMAP Server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sysinfotools.com\/blog\/import-olm-to-imap-server\/#Error-Free_Import_OLM_to_IMAP_Server\" >Error-Free Import OLM to IMAP Server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sysinfotools.com\/blog\/import-olm-to-imap-server\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Brief_Understanding_of_OLM_to_IMAP_Migration\"><\/span>Brief Understanding of OLM to IMAP Migration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The OLM file created by Outlook for Mac is platform-dependent and stores all emails, contacts, calendars, tasks, and other data locally. Whereas IMAP (Internet Message Access Protocol) is a server storage that keeps your mailbox data synced across various devices in real-time.<\/p>\n<p>With this import, you move data from your local desktop to cloud storage, which gives wide accessibility.<\/p>\n<p><strong>How?<\/strong><\/p>\n<p>IMAP supports numerous email clients, such as Microsoft Outlook, Mozilla Thunderbird, Apple Mail, Gmail, Other Webmails, etc.<\/p>\n<p>Furthermore, the common scenarios where you must import OLM file to IMAP server include:<\/p>\n<ul>\n<li>Transferring from Mac to web-based or cross-platform emails.<\/li>\n<li>Exchanging Outlook data between Mac and Windows spaces.<\/li>\n<li>Importing OLM data to a central IMAP server for easy team access.<\/li>\n<li>Better security, data backup, and storage from a single space.<\/li>\n<li>For effortless collaboration, better compatibility, and improved management.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ultimate_Solutions_to_Import_OLM_to_IMAP_Server\"><\/span>Ultimate Solutions to Import OLM to IMAP Server<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In this specific section, find out how you can perform the data transfer for free manually with control. Additionally, learn the pros and cons of manual data transfers. Once done, find out the best solution for quick and secure transfers with the OLM File Converter.<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cost-Free_Open_OLM_File_in_IMAP_Server\"><\/span>Cost-Free Open OLM File in IMAP Server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The manual process is somewhat technical, but it is feasible if done diligently. Use the following steps to manually import your OLM mailbox to IMAP through Outlook for Mac. The steps are:<\/p>\n<ol>\n<li>Launch <strong>Outlook for Mac<\/strong> and from <strong>Tools &gt;&gt; Accounts<\/strong>, click <strong>+ &gt;&gt; New Account<\/strong>.<\/li>\n<li>Then, sign in using your <strong>IMAP-supported account<\/strong> (Say, <strong>Gmail<\/strong>).<\/li>\n<li>Further, verify that <strong>IMAP <\/strong>access is <strong>active<\/strong> via your mail server settings.<\/li>\n<li>Once connected, click on your <strong>IMAP<\/strong> account in Outlook and select <strong>New Folder<\/strong>.<\/li>\n<li>Afterward, title the folder with a <strong>name<\/strong> of your choice, like &#8220;OLM Emails&#8221;, etc.<\/li>\n<li>Later, <strong>drag and drop <\/strong>the desired emails, folders, or items from your <strong>OLM mailbox<\/strong> to the <strong>new IMAP<\/strong> folder.<\/li>\n<li>Your Outlook will automatically sync that folder to the IMAP server.<\/li>\n<li>Now, open <strong>Windows Outlook<\/strong> (or <strong>another<\/strong> <strong>email program<\/strong>).<\/li>\n<li>Next, install the <strong>same IMAP<\/strong> account on Outlook\/whatever email they are using.<\/li>\n<li>Finally, every <strong>email<\/strong> that was transferred will be there via the synchronized folder, consistent across devices.<\/li>\n<\/ol>\n<p><strong>Loopholes of the Manual Method<\/strong><\/p>\n<ul>\n<li>Takes too long when you have large OLM files or a bulk mailbox.<\/li>\n<li>Does not save contacts, calendars, or attachments appropriately.<\/li>\n<li>The system is constantly interrupted and has data duplication issues.<\/li>\n<li>Requires a constant internet connection, and Outlook is installed.<\/li>\n<li>Must have some technical expertise to avoid major loss or corruption.<\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Error-Free_Import_OLM_to_IMAP_Server\"><\/span>Error-Free Import OLM to IMAP Server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Enterprises and large-scale users are always concerned about data security and folder structure. This is why it is better to download the <strong>SysInfo OLM Converter Tool<\/strong> to automate the process and migrate data, ensuring accuracy and precision. Moreover, this tool has some exceptional features that make it a preferred choice, such as:<\/p>\n<ul>\n<li>Support for bulk migration of very large OLMs with attachments.<\/li>\n<li>Preservation of folder hierarchy, email content, and metadata.<\/li>\n<li>Map OLM folders directly and work across Windows and Mac OS.<\/li>\n<li>User-friendly tool with no requirement for Outlook installation.<\/li>\n<li><strong>Demo Version<\/strong> to instantly import upto <strong>50 emails per folder at no cost<\/strong>.<\/li>\n<\/ul>\n<p><strong>Guide to Migrate Outlook OLM to IMAP Server<\/strong><\/p>\n<ol>\n<li>Start the <strong>OLM to IMAP Migration Tool<\/strong> and tap <strong>Continue<\/strong>.<\/li>\n<li>Then, using the <strong>Select<\/strong> buttons, load <strong>OLM<\/strong> files and folders and hit <strong>Next<\/strong>.<\/li>\n<li>Further, preview files and folders from the tree view and select them. Tap <strong>Next.<\/strong><\/li>\n<li>After that, choose the <strong>IMAP<\/strong> option from the email clients list and enter the credentials.<\/li>\n<li>Press <strong>Sign In<\/strong> to authenticate. Apply the filters and, at last, click <strong>Convert<\/strong> to transfer.<\/li>\n<\/ol>\n<p>Also, you can use it to <a href=\"https:\/\/www.sysinfotools.com\/blog\/extract-attachments-from-olm-file\/\"><strong>Extract Attachments from OLM<\/strong><\/a> without hassle.<\/p>\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=\"color: #10394C;font-weight: 700;font-size: 24px;margin-bottom: 12px;\">Example Case<\/p>\n  <p style=\"line-height: 1.7; font-size: 15px; margin-bottom: 12px;\">\nDarcy from a marketing agency was managing around 25 Mac systems. She decided to consolidate all OLM mailboxes into a centralized IMAP Server for easy and reliable access. With the OLM File Converter, she was able to successfully upload over 60 GB of data in a few hours without loss or downtime. It helped cut her migration time by a huge ratio, providing an effortless transition and saved time and data.<\/p>\n<\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Importing OLM files to an IMAP server allows you to move email from local Mac Outlook data to accessible email in the cloud. This works well for small mailboxes if you manually transfer your data, but the process is usually slow and can lead to mistakes with bulk mailboxes. A professional OLM to IMAP Migration Tool makes it easy to import OLM to IMAP server accurately and securely. Thus, making it a great option for organizations managing large email infrastructures that are shared across multiple users.<\/p>\n<p><strong>Read Also:<\/strong> <a href=\"https:\/\/www.sysinfotools.com\/blog\/fix-outlook-mac-keeps-asking-for-credentials\/\">Outlook Mac Keeps Asking for Credentials<\/a><\/p>\n<h4 class=\"faq_heading\">FAQs<\/h4>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1762757242394\"><strong class=\"schema-faq-question\">Q. Is it possible to open OLM files directly in an IMAP server?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans-<\/strong> No, you cannot open OLM file in IMAP server directly because OLM files are not compatible with IMAP. To open them, use the advanced OLM Conversion Tool.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1762757250996\"><strong class=\"schema-faq-question\">Q. Is there any size restriction when importing OLM to IMAP manually?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans-<\/strong> Yes, there are typical size restrictions. The vast majority of IMAP servers impose limits, either in size per mailbox or size limitations for attachments, often around 25-50MB per email, and Mailbox limits of 2-5 GB.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1762757264415\"><strong class=\"schema-faq-question\">Q. Can I choose to migrate only selective OLM folders to IMAP?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans-<\/strong> Yes, OLM Conversion Tool allows you to choose and select your folders (Inbox, Sent, Drafts, etc.) rather than transferring data you do not wish to transfer.<\/p> <\/div> <\/div>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;19708&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;1&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&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;5\\\/5 - (1 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;How to Import OLM to IMAP Server on Windows \\u0026amp; Mac&quot;,&quot;width&quot;:&quot;142.5&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: 142.5px;\">\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            5\/5 - (1 vote)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Moving Outlook data across platforms isn&rsquo;t as simple as it should be because when you are switching from Mac, you<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.sysinfotools.com\/blog\/import-olm-to-imap-server\/\">Read More<\/a><\/p>\n","protected":false},"author":15,"featured_media":19712,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[859],"tags":[],"class_list":["post-19708","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-migration"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Import OLM to IMAP Server on Windows &amp; Mac<\/title>\n<meta name=\"description\" content=\"Import OLM to IMAP Server effortlessly with this step-by-step guide. Learn how to move Outlook for Mac data to any IMAP-supported account.\" \/>\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.sysinfotools.com\/blog\/import-olm-to-imap-server\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Import OLM to IMAP Server on Windows &amp; Mac\" \/>\n<meta property=\"og:description\" content=\"Import OLM to IMAP Server effortlessly with this step-by-step guide. 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