Migrate IMAP Calendar to Office 365: A Comprehensive Guide

Overview: Nowadays, businesses are transitioning to various Cloud platforms such as Office 365, Google Workspace, and others. Therefore, migrating essential data such as emails, calendars, and contacts becomes crucial. Are you also looking for ways to migrate IMAP calendar to Office 365? This blog is for you. You can migrate IMAP Calendars to Office 365 using the Manual procedure or a professional IMAP Backup Tool. So, to answer your query, ‘How do I move my Calendar to Office 365?’ let us first begin with the manual solution.


Office 365 has evolved as the most popular and widely demanded cloud platform. It is a cost-effective email client providing various features to facilitate effective communication and collaborations. Moreover, it provides a flexible subscription plan according to your business needs. Moving to Office 365 enables users to manage emails, contacts, and calendars more efficiently.

Furthermore, if you want to migrate Calendars from Gmail, there is a manual solution. Otherwise, You need to use a professional tool to transfer IMAP calendar to Office 365.

Manually Migrate IMAP Calendar to Office 365

The manual procedure to import Gmail Calendar to Office 365 involves two primary steps:

  1. Export the Gmail Calendar to a File
  2. Import Calendar to Outlook on your PC

This process is applicable only if you are migrating emails from Gmail to Office 365. Mentioned below are detailed steps to migrate Calendar from IMAP to Office 365. Follow these steps:

Step 1: Transfer the Gmail Calendar to a File

  1. Sign in to your Gmail account.
  2. Open the Google Apps menu (upper right corner).
  3. From all Google Apps, select Calendar.
  4. Google Calendar window appears. Go to Settings.
  5. In Settings, choose Import & Export from the left menu.
  6. Next, click on the Export option.
  7. Again, to begin the export, click on Export at the bottom.
  8. Select a location to save the file.
  9. Calendar is saved within a Zip file.

After extracting the file, another step to migrate IMAP Calendar to Office 365 is to import it to MS Outlook.

Step 2: Import Calendar to MS Outlook

Before you begin the second step to import IMAP Calendar to Office 365, be careful. Ensure that your MS Outlook is properly configured with your Office 365 account. Further, follow the steps below to Import Gmail Calendar to MS Outlook:

  1. Open MS Outlook on your PC.
  2. Click on Calendar.
  3. In the Menu bar, click on the File tab.
  4. Select Open & Export, then click Import/Export.
  5. The Import and Export wizard will appear.
  6. Choose Import an iCalendar or vCalendar file. Click Next.
  7. Browse and select the file with the gmail.com extension, that you extracted from Gmail.
  8. Then, click OK. A pop-up will appear. Click Import.

Now, you can see your Gmail Calendar in the calendars section of MS Outlook. This was a whole manual step to migrate IMAP Calendar to Office 365. However, this procedure has certain limitations.

Limitations of Manual Process

Some of the limitations of the manual method to migrate IMAP Calendar to Microsoft 365:

  • You can migrate only Calendars from Gmail and not from other IMAP servers.
  • Additionally, it is exclusively applicable to Outlook 2013 and 2016.
  • Needs proper configuration of MS Outlook with your Office 365 account.
  • Also, it can be lengthy and time-consuming if you are not well aware.

Therefore, alternatively, you can use a professional tool to migrate Calendar from IMAP to Office 365. Let us explore the features and workings of one of the most recommended tools.

Best Professional Solution to Migrate IMAP Calendar to Office 365

MigrateEmails IMAP Mail Backup Tool is a proficient tool to efficiently migrate IMAP mailbox data, Contacts, Calendars, etc. You can backup IMAP Data to different file formats like EML, PST, MBOX, MSG, PDF, DOC, etc. Moreover, the tool enables direct migration of IMAP calendars and other data to many email clients. Furthermore, it has various features and functionalities that help you customize Output and deliver accurate results.

Steps to Transfer IMAP Calendar to Office 365

Mentioned below are steps to migrate Calendars from IMAP using the tool:

  • Download and run the tool on your PC.
  • Log in to an IMAP-enabled email account.
  • From the preview panel, select the Calendar folder. Click Next.
  • Choose Office 365 as a destination email client.
  • Apply filters to remove duplicates and get accurate results.
  • Lastly, click Convert to begin to export IMAP Calendar to Office 365.

These were the simplest and quick steps to carry out IMAP Calendar migration. Moreover, the tool offers various filters and options to customize the resultant.

Noteworthy Features of the Tool

  • You can choose to remove identical or duplicate data.
  • Date-selective migration according to set start and end dates,
  • Option to migrate IMAP emails with or without attachment files.
  • You can also migrate emails from IMAP to Gmail, IMAP, G Suite, etc.
  • It is a widely compatible tool with all versions of Windows OS.


Follow the procedure mentioned in the blog to migrate IMAP calendar to Office 365. However, a manual process is limited to migrating only Gamil Calendars. Therefore, choosing a professional tool is the most recommended solution for all, as it is secure and effective.

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