{"id":195,"date":"2025-03-05T18:28:16","date_gmt":"2025-03-05T18:28:16","guid":{"rendered":"https:\/\/www.regzionsoftware.com\/blog\/?p=195"},"modified":"2025-03-05T18:28:17","modified_gmt":"2025-03-05T18:28:17","slug":"import-outlook-ost-to-office-365","status":"publish","type":"post","link":"https:\/\/www.regzionsoftware.com\/blog\/import-outlook-ost-to-office-365\/","title":{"rendered":"How to Import Outlook OST to Office 365 Mailbox? Step by Step"},"content":{"rendered":"\n
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Migrating email data from Outlook to Office 365 mailbox often involves importing OST files. But there are many users who don’t know how to import Outlook OST to Office 365 account. So, with this article we are going to explain the complete method to do this job in a safe way. Let’s start.<\/em><\/p>\n<\/blockquote>\n\n\n\n

Microsoft Outlook is one of the most widely used email clients. This desktop application provides the facility to manage email, calendar, tasks, and contacts. It stores user data locally on their computer, allowing users to access their email profile items even in offline mode.<\/p>\n\n\n\n

When you set up Outlook profile with an Exchange, IMAP, or Office 365 account, Outlook creates an Offline Storage Table (OST) file.<\/p>\n\n\n\n

An OST file is a local copy of your mailbox data that is synced with the mail server. You can read and write emails, manage calendars and access other Outlook features from OST even in the absence of the internet.<\/p>\n\n\n\n

Once you reconnect to the mail server, all the changes made offline inside OST files are automatically synced with the mail server data.<\/p>\n\n\n\n

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Also Read: – How to Import Outlook OST to Gmail\/G-Suite: A Step-by-Step Guide<\/a><\/strong><\/em><\/p>\n<\/blockquote>\n\n\n\n

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Office 365 \/ Outlook 365 Overview<\/h2>\n\n\n\n
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Office 365 (now known as Microsoft 365) is a cloud-based suite of productivity tools. It includes the online version of MS Outlook which is Outlook 365.<\/p>\n\n\n\n

Office 365\/Outlook 365 is a reliable flexible email management solution with many features. It offers large storage, advanced security, automatic updates, web accessibility, and cross platform support.<\/p>\n\n\n\n

Outlook 365 gives users easy access to emails, contacts, and calendar events across multiple devices. Its smart features and anytime, anywhere data access capabilities make Office 365 an ideal choice for both personal and business use.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Why do users need to import OST to Office365?<\/h3>\n\n\n\n

Before proceeding with the migration steps, it is important to understand the requirements for importing OST file to Office 365 mailbox. Here are some of the major reasons for this: \u2013<\/p>\n\n\n\n