{"id":964,"date":"2026-07-11T05:52:43","date_gmt":"2026-07-11T05:52:43","guid":{"rendered":"https:\/\/www.cigatisolutions.com\/blog\/?p=964"},"modified":"2026-07-13T07:48:08","modified_gmt":"2026-07-13T07:48:08","slug":"import-pst-to-office-365","status":"publish","type":"post","link":"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/","title":{"rendered":"How to Import PST Files to Office 365 without Installing Outlook"},"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;964&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;2&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 - (2 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;How to Import PST Files to Office 365 without Installing Outlook&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 - (2 votes)    <\/div>\n    <\/div>\n<div class=\"user-query-n\">\n\nUser Query: I&#8217;m the Microsoft 365 admin for our company, and I need to import PST to Office 365 for around 100 users. I know Microsoft Purview supports Network Upload, but the setup with AzCopy and CSV mapping looks like a lot of work. Has anyone used the built-in method for a large migration, or is a third-party PST migration tool a better option for saving time and handling multiple PST files?\n\n<\/div>\n<div class=\"migrate-btn-n my-4\">\n\nMigrating to Microsoft 365 boosts collaboration &amp; security, but if you need to import PST to Office 365 mailboxes at scale, it becomes difficult. Moreover, duplicate emails, incomplete imports, &amp; mapping errors are common. Whether moving from on-premises Exchange or consolidating employee archives, a reliable option like the <b><a href=\"https:\/\/www.cigatisolutions.com\/pst-to-office365-migration\/\">Cigati PST to Office 365 Migration Tool<\/a><\/b> keeps enterprise migrations accurate and efficient.\n\n<!-- \/wp:post-content -->\n<div class=\"row justify-content-center mac-win-tab mt-3 mb-5\">\n<div class=\"col-md-6\">\n<ul id=\"myTab\" class=\"nav nav-tabs justify-content-center\" role=\"tablist\">\n \t<li class=\"nav-item\" role=\"presentation\"><button id=\"home-tab\" class=\"nav-link bg-transparent px-4 active\" role=\"tab\" type=\"button\" data-toggle=\"tab\" data-target=\"#home\" aria-controls=\"home\" aria-selected=\"true\"><i class=\"icon-windows\"><\/i> Windows<\/button><\/li>\n \t<li class=\"nav-item\" role=\"presentation\"><button id=\"profile-tab\" class=\"nav-link bg-transparent px-4\" role=\"tab\" type=\"button\" data-toggle=\"tab\" data-target=\"#profile\" aria-controls=\"profile\" 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href=\"https:\/\/www.cigatisolutions.com\/mac\/pst-to-office365-migration\/purchase-now.php\"><i class=\"icon-basket\"><\/i> Purchase Now<\/a><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 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: #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.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Who_Requires_to_Import_PST_File_to_Office_365\" >Who Requires to Import PST File to Office 365?<\/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.cigatisolutions.com\/blog\/import-pst-to-office-365\/#What_are_the_Different_Methods_to_Import_Outlook_PST_to_Office_365\" >What are the Different Methods to Import Outlook PST to Office 365?<\/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.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Way_01_Native_Methods_to_Import_PST_to_Office_365\" >Way 01: Native Methods to Import PST to Office 365<\/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.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Way_02_Upload_PST_File_to_Office_365_Using_Microsoft_Purview_Network_Upload\" >Way 02: Upload PST File to Office 365 Using Microsoft Purview Network Upload<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/#What_Are_the_Limitations_of_the_Manual_Method\" >What Are the Limitations of the Manual Method?<\/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-6\" href=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/#How_to_Import_PST_to_Office_365_with_an_Automated_Solution\" >How to Import PST to Office 365 with an Automated Solution?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Quick_Guide_to_Import_PST_to_Microsoft_365\" >Quick Guide to Import PST to Microsoft 365<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Case_Study_Importing_Multiple_PST_Files_into_Office_365\" >Case Study: Importing Multiple PST Files into Office 365<\/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.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Time_to_Wrap_Up\" >Time to Wrap Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Who_Requires_to_Import_PST_File_to_Office_365\"><\/span>Who Requires to Import PST File to Office 365?<span class=\"ez-toc-section-end\"><\/span><\/h2>\nThe most common reasons for users to import Outlook PST files into the Office 365 account are highlighted below.\n<ul>\n \t<li>Microsoft 365 administrators who move employee mailboxes.<\/li>\n \t<li>Organizations that shift Outlook PST files to cloud mailboxes.<\/li>\n \t<li>IT teams with archived PST files in Microsoft 365.<\/li>\n \t<li>Businesses that replace on-premises Exchange with Exchange Online.<\/li>\n \t<li>Companies that restore mailbox backups from PST files.<\/li>\n \t<li>Organizations that give new employees access to old Outlook data.<\/li>\n \t<li>Enterprises with large Office 365 mailbox migration projects.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_the_Different_Methods_to_Import_Outlook_PST_to_Office_365\"><\/span>What are the Different Methods to Import Outlook PST to Office 365?<span class=\"ez-toc-section-end\"><\/span><\/h2>\nThere are different ways to transfer the Outlook PST to Office 365, based on the number of PST files you need to move. Users can use the Classic Outlook desktop app for a few files or Microsoft Purview&#8217;s Network Upload method for multiple users. For a better option, use the <strong>Cigati PST to Office 365 Migration Tool<\/strong> to import single or multiple PST files quickly &amp; securely.\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Way_01_Native_Methods_to_Import_PST_to_Office_365\"><\/span>Way 01: Native Methods to Import PST to Office 365<span class=\"ez-toc-section-end\"><\/span><\/h3>\nThe Outlook Desktop App native method works well for individual users who have <strong>Classic Outlook for Windows<\/strong> installed.\n<ol>\n \t<li>First, open Classic Outlook &amp; log in with your Microsoft 365 account.<\/li>\n \t<li>Next, go to File &gt;&gt; Open &amp; Export &gt;&gt; Import\/Export.<\/li>\n \t<li>Then, you need to choose Import from another program or file.<\/li>\n \t<li>After that, you have to choose Outlook Data File (.pst).<\/li>\n \t<li>Now, browse &amp; select the PST file you want to export.<\/li>\n \t<li>Thereafter, choose how you want Outlook to handle duplicate items.<\/li>\n \t<li>Afterward, you have to select your Microsoft 365 mailbox as the destination.<\/li>\n \t<li>Finally, click on Finish button &gt;&gt; wait for the import process to complete.<\/li>\n<\/ol>\n<strong>Note:<\/strong>\n<ul>\n \t<li>This native method works only when users have Classic Outlook. The New Outlook for Windows does not support to import PST files directly.<\/li>\n \t<li>The imported data first goes into the mailbox, then syncs to Microsoft 365.<\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Way_02_Upload_PST_File_to_Office_365_Using_Microsoft_Purview_Network_Upload\"><\/span>Way 02: Upload PST File to Office 365 Using Microsoft Purview Network Upload<span class=\"ez-toc-section-end\"><\/span><\/h3>\nThis is Microsoft&#8217;s recommended approach for IT administrators who want to import several PST files into multiple Microsoft 365 mailboxes in an organized &amp; reliable manner.\n<ol>\n \t<li>First, assign the required <strong>Mailbox Import Export<\/strong> role.<\/li>\n \t<li>Next, create a new PST Import job in Microsoft Purview.<\/li>\n \t<li>Then, generate the <strong>Azure SAS URL<\/strong>.<\/li>\n \t<li>After that, upload the <strong>PST<\/strong> files using <strong>AzCopy<\/strong>.<\/li>\n \t<li>Now, create and upload the <strong>CSV<\/strong> mapping file.<\/li>\n \t<li>Next, <strong>validate<\/strong> the mailbox mapping to check for any errors.<\/li>\n \t<li>Then, start the import job.<\/li>\n \t<li>Finally, <strong>Microsoft<\/strong> imports the PST data into the target mailboxes.<\/li>\n<\/ol>\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_the_Limitations_of_the_Manual_Method\"><\/span>What Are the Limitations of the Manual Method?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n \t<li>The process takes more time when you have multiple PST files.<\/li>\n \t<li>You need administrator permissions and several setup steps before the import.<\/li>\n \t<li>The CSV mapping file becomes difficult to create &amp; manage for large migrations.<\/li>\n \t<li>Large PST files can take hours to upload &amp; sync with Microsoft 365.<\/li>\n \t<li>It does not support batch imports or advanced filters for selective data transfer.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Import_PST_to_Office_365_with_an_Automated_Solution\"><\/span>How to Import PST to Office 365 with an Automated Solution?<span class=\"ez-toc-section-end\"><\/span><\/h2>\nThe <strong>Cigati PST to Office 365 Migration Tool<\/strong> offers a simple way to migrate the PST to Office 365. It supports the migration of single as well as multiple PST files while it preserves emails, contacts, &amp; the original folder hierarchy. Moreover, this software also includes useful features such as mailbox preview, date-based migration, duplicate email removal, and default folder restoration. Whether you need to migrate a few PST files or perform a large-scale Office 365 migration, this tool helps users to complete the process accurately &amp; efficiently.\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quick_Guide_to_Import_PST_to_Microsoft_365\"><\/span>Quick Guide to Import PST to Microsoft 365<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>Firstly, <strong>install<\/strong> and launch the PST to Office 365 Migration Tool &gt;&gt; click <strong>Restore<\/strong>.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13781 size-full\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/1.webp\" alt=\"install the PST to Office 365 Migration Tool and click Restore.\" width=\"617\" height=\"495\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/1.webp 617w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/1-300x241.webp 300w\" sizes=\"auto, (max-width: 617px) 100vw, 617px\" \/><\/li>\n<br>\n<li>After that, <strong>select PST<\/strong> &gt;&gt; choose either <strong>Select<\/strong> Single File or Select Folder to load your PST data &gt;&gt; click <strong>Next<\/strong>.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13782\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/2-300x163.webp\" alt=\"select PST and select files\/folders and click next.\" width=\"650\" height=\"352\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/2-300x163.webp 300w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/2-1024x555.webp 1024w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/2-768x416.webp 768w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/2-1536x833.webp 1536w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/2.webp 1920w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/li>\n<br>\n<li>Verify the added PST files and tap <strong>Next<\/strong> to proceed.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13783\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/3-300x162.webp\" alt=\"Verify the added PST files and tap Next.\" width=\"650\" height=\"351\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/3-300x162.webp 300w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/3-1024x553.webp 1024w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/3-768x414.webp 768w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/3-1536x829.webp 1536w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/3.webp 1920w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/li>\n<br>\n<li>Next, select your preferred authentication method, such as use Modern Authentication (Recommended) &gt;&gt; provide Office 365 credentials.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13784\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/4-300x162.webp\" alt=\"select your preferred authentication method  &gt;&gt; provide Office 365 credentials.\" width=\"650\" height=\"351\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/4-300x162.webp 300w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/4-1024x553.webp 1024w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/4-768x415.webp 768w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/4-1536x830.webp 1536w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/4.webp 1920w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/li>\n<br>\n<li>Now, apply the filters or features such as (Date filter, custom name folder) &gt;&gt; tap Next.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13785\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/5-300x163.webp\" alt=\"apply the filters or features and click next.\" width=\"650\" height=\"352\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/5-300x163.webp 300w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/5-1024x555.webp 1024w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/5-768x416.webp 768w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/5-1536x832.webp 1536w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/5.webp 1920w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/li>\n<br>\n<li>Then, select the mailbox you want to map with the imported PST file &gt;&gt; tap Next.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13786\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/6-300x162.webp\" alt=\"select the mailbox you want to map and click next.\" width=\"650\" height=\"351\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/6-300x162.webp 300w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/6-1024x553.webp 1024w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/6-768x415.webp 768w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/6-1536x830.webp 1536w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/6.webp 1920w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/li>\n<br>\n<li>Finally, click on Restore to start the migration.\n<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13787\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/7-300x162.webp\" alt=\"click on Restore.\" width=\"650\" height=\"351\" style=\"border: 1px solid\" srcset=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/7-300x162.webp 300w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/7-1024x554.webp 1024w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/7-768x415.webp 768w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/7-1536x830.webp 1536w, https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/7.webp 1920w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/li>\n<br>\n<\/ol>\n<div class=\"case-study-n my-3\">\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Case_Study_Importing_Multiple_PST_Files_into_Office_365\"><\/span>Case Study: Importing Multiple PST Files into Office 365<span class=\"ez-toc-section-end\"><\/span><\/h3>\nClient Background\n\nA mid-sized IT services company decided to move all their employee mailboxes from standalone Outlook to Microsoft 365. Over the years, employees had saved their important emails, contacts, &amp; calendars in separate PST files, making mailbox consolidation a major challenge.\n\nChallenges Faced\n<ul>\n \t<li>More than 300 PST files required import into different Office 365 mailboxes.<\/li>\n \t<li>Native import through Classic Outlook consumed a significant amount of time.<\/li>\n \t<li>The IT team wanted to preserve the original folder hierarchy &amp; mailbox data. Duplicate emails had to be avoided during the migration.<\/li>\n \t<li>The organization needed a solution that could handle multiple PST files in one process.<\/li>\n<\/ul>\nSolution Provided\n\nThe company used the Cigati PST to Office 365 Migration Tool to upload PST File to Office 365. The software migrated multiple PST files in a single operation while make sure that emails, contacts, attachments, &amp; mailbox properties are preserved. It also applied the required filters &amp; maintained the original folder structure throughout the migration.\n\nResults Achieved\n<ul>\n \t<li>Successfully imported all PST files into the correct Office 365 mailboxes.<\/li>\n \t<li>Preserved mailbox structure, email properties, &amp; attachments.<\/li>\n \t<li>Reduced the overall migration time compared to the native method.<\/li>\n \t<li>Eliminated duplicate mailbox data during the export.<\/li>\n \t<li>Allowed employees to access their historical Outlook data immediately after the migration.<\/li>\n<\/ul>\n<\/div>\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Time_to_Wrap_Up\"><\/span>Time to Wrap Up<span class=\"ez-toc-section-end\"><\/span><\/h4>\nTo wrap it up, we discussed all the aspects of who needs to import PST to Office 365. Along with that, we covered the manual method and the professional method through which you can complete the process. The native method works, but it requires technical expertise &amp; careful configuration to avoid errors. Therefore, for a simple &amp; reliable solution, it is recommended for users to use a professional PST to Office 365 Migration Tool. It helps import the files quickly without any data loss.\n<div class=\"faq-n my-4\">\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<!-- wp:yoast\/faq-block {\"questions\":[{\"id\":\"faq-question-1783689429337\",\"question\":\"\\u003cstrong\\u003e1. Can I Import PST to Office 365 without Outlook?\\u003c\/strong\\u003e\",\"answer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. You can Import PST to Office 365 without Outlook by using Microsoft's Network Upload method through Microsoft Purview or a dedicated PST migration tool. However, if you choose the Outlook Import\/Export method, Classic Outlook must be installed on your system.\",\"jsonQuestion\":\"\\u003cstrong\\u003e1. Can I Import PST to Office 365 without Outlook?\\u003c\/strong\\u003e\",\"jsonAnswer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. You can Import PST to Office 365 without Outlook by using Microsoft's Network Upload method through Microsoft Purview or a dedicated PST migration tool. However, if you choose the Outlook Import\/Export method, Classic Outlook must be installed on your system.\",\"images\":[]},{\"id\":\"faq-question-1783689444029\",\"question\":\"\\u003cstrong\\u003e2. Will Import PST to Office 365 preserve emails and folder hierarchy?\\u003c\/strong\\u003e\",\"answer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. The import process preserves emails, contacts, calendars, attachments, and the original folder hierarchy, provided the PST file is not corrupted and the migration completes successfully.\",\"jsonQuestion\":\"\\u003cstrong\\u003e2. Will Import PST to Office 365 preserve emails and folder hierarchy?\\u003c\/strong\\u003e\",\"jsonAnswer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. The import process preserves emails, contacts, calendars, attachments, and the original folder hierarchy, provided the PST file is not corrupted and the migration completes successfully.\",\"images\":[]},{\"id\":\"faq-question-1783689453421\",\"question\":\"\\u003cstrong\\u003e3. Can I import multiple PST files into different Office 365 mailboxes?\\u003c\/strong\\u003e\",\"answer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. Microsoft Purview supports bulk PST imports through a CSV mapping file. Alternatively, a PST migration tool allows you to import multiple PST files into their respective Office 365 mailboxes in a single process.\",\"jsonQuestion\":\"\\u003cstrong\\u003e3. Can I import multiple PST files into different Office 365 mailboxes?\\u003c\/strong\\u003e\",\"jsonAnswer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. Microsoft Purview supports bulk PST imports through a CSV mapping file. Alternatively, a PST migration tool allows you to import multiple PST files into their respective Office 365 mailboxes in a single process.\",\"images\":[]},{\"id\":\"faq-question-1783689477573\",\"question\":\"\\u003cstrong\\u003e4. Is there a size limit when I Import PST to Office 365?\\u003c\/strong\\u003e\",\"answer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Microsoft does not define a fixed PST file size limit for import. However, larger PST files may take more time to upload and process based on your internet speed and Microsoft 365 synchronization.\",\"jsonQuestion\":\"\\u003cstrong\\u003e4. Is there a size limit when I Import PST to Office 365?\\u003c\/strong\\u003e\",\"jsonAnswer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Microsoft does not define a fixed PST file size limit for import. However, larger PST files may take more time to upload and process based on your internet speed and Microsoft 365 synchronization.\",\"images\":[]},{\"id\":\"faq-question-1783689491886\",\"question\":\"\\u003cstrong\\u003e5. Can I import only selected mailbox items from a PST file?\\u003c\/strong\\u003e\",\"answer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. Many PST migration tools provide advanced filters that let you import specific emails, folders, or mailbox items based on date range or item type, helping reduce migration time.\",\"jsonQuestion\":\"\\u003cstrong\\u003e5. Can I import only selected mailbox items from a PST file?\\u003c\/strong\\u003e\",\"jsonAnswer\":\"\\u003cstrong\\u003eAns\\u003c\/strong\\u003e. Yes. Many PST migration tools provide advanced filters that let you import specific emails, folders, or mailbox items based on date range or item type, helping reduce migration time.\",\"images\":[]}]} -->\n<div class=\"schema-faq wp-block-yoast-faq-block\">\n<div class=\"schema-faq-section\" id=\"faq-question-1783689429337\"><strong class=\"schema-faq-question\"><strong>1. Can I Import PST to Office 365 without Outlook?<\/strong><\/strong>\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Yes. You can Import PST to Office 365 without Outlook by using Microsoft&#8217;s Network Upload method through Microsoft Purview or a dedicated PST migration tool. However, if you choose the Outlook Import\/Export method, Classic Outlook must be installed on your system.<\/p>\n\n<\/div>\n<div class=\"schema-faq-section\" id=\"faq-question-1783689444029\"><strong class=\"schema-faq-question\"><strong>2. Will Import PST to Office 365 preserve emails and folder hierarchy?<\/strong><\/strong>\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Yes. The import process preserves emails, contacts, calendars, attachments, and the original folder hierarchy, provided the PST file is not corrupted and the migration completes successfully.<\/p>\n\n<\/div>\n<div class=\"schema-faq-section\" id=\"faq-question-1783689453421\"><strong class=\"schema-faq-question\"><strong>3. Can I import multiple PST files into different Office 365 mailboxes?<\/strong><\/strong>\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Yes. Microsoft Purview supports bulk PST imports through a CSV mapping file. Alternatively, a PST migration tool allows you to import multiple PST files into their respective Office 365 mailboxes in a single process.<\/p>\n\n<\/div>\n<div class=\"schema-faq-section\" id=\"faq-question-1783689477573\"><strong class=\"schema-faq-question\"><strong>4. Is there a size limit when I Import PST to Office 365?<\/strong><\/strong>\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Microsoft does not define a fixed PST file size limit for import. However, larger PST files may take more time to upload and process based on your internet speed and Microsoft 365 synchronization.<\/p>\n\n<\/div>\n<div class=\"schema-faq-section\" id=\"faq-question-1783689491886\"><strong class=\"schema-faq-question\"><strong>5. Can I import only selected mailbox items from a PST file?<\/strong><\/strong>\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Yes. Many PST migration tools provide advanced filters that let you import specific emails, folders, or mailbox items based on date range or item type, helping reduce migration time.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<!-- \/wp:yoast\/faq-block -->","protected":false},"excerpt":{"rendered":"<p>User Query: I&#8217;m the Microsoft 365 admin for our company, and I need to import PST to Office 365 for<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":13780,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-management-migration"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quick Guide to Import PST Files to Office 365 in 2026<\/title>\n<meta name=\"description\" content=\"Learn how to Import PST Files to Office 365 without data loss. Explore manual and automated methods for faster, secure migration.\" \/>\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.cigatisolutions.com\/blog\/import-pst-to-office-365\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quick Guide to Import PST Files to Office 365 in 2026\" \/>\n<meta property=\"og:description\" content=\"Learn how to Import PST Files to Office 365 without data loss. Explore manual and automated methods for faster, secure migration.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cigatisolutions.com\/blog\/import-pst-to-office-365\/\" \/>\n<meta property=\"og:site_name\" content=\"Cigati Solutions Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-11T05:52:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-13T07:48:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/01\/how-to-import-pst-to-office-365-for-multiple-users-admin-guide.png\" \/>\n\t<meta property=\"og:image:width\" content=\"2240\" \/>\n\t<meta property=\"og:image:height\" content=\"1260\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Rohit Singh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Rohit Singh\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/\"},\"author\":{\"name\":\"Rohit Singh\",\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/#\\\/schema\\\/person\\\/250a58543f961011b89f30c0c3e81f7b\"},\"headline\":\"How to Import PST Files to Office 365 without Installing Outlook\",\"datePublished\":\"2026-07-11T05:52:43+00:00\",\"dateModified\":\"2026-07-13T07:48:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/\"},\"wordCount\":1355,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/how-to-import-pst-to-office-365-for-multiple-users-admin-guide.png\",\"articleSection\":[\"Email Management &amp; Migration\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/\",\"url\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/\",\"name\":\"Quick Guide to Import PST Files to Office 365 in 2026\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/import-pst-to-office-365\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cigatisolutions.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/how-to-import-pst-to-office-365-for-multiple-users-admin-guide.png\",\"datePublished\":\"2026-07-11T05:52:43+00:00\",\"dateModified\":\"2026-07-13T07:48:08+00:00\",\"description\":\"Learn how to Import PST Files to Office 365 without data loss. 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