This is part of a Microsoft self-service article titled Set up Office 365 for business.


One mailbox: How to import email, contacts, and calendars to Office 365


Here are the different methods you can use to copy email, contacts, and calendars to Office 365.


What do you want to do?

Requirements

Your source system is Gmail and you want to move data to Outlook 2016 (Office 365):

You need to use a version of Outlook that is installed on your desktop for this task. Outlook is included in most Office 365 plans.

You have an older version of Outlook and you want to move data to Outlook 2016 (Office 365):

  1. Export email, contacts, and calendar to an Outlook .pst file.

  2. Import mail, contacts, and calendar from an Outlook .pst file.

You need to use a version of Outlook that is installed on your desktop for this task. Outlook is included in most Office 365 plans.

You want to import contacts to Outlook 2016 (Office 365):

  1. Export contacts from Outlook or other email providers.

  2. Import contacts to Outlook for Windows

You need to use a version of Outlook that is installed on your desktop for importing or exporting contacts to/from Outlook.


Multiple mailboxes: How admins can bulk import email, contacts, and calendars to Office 365

Depending on your source email system, you can choose from several bulk migration methods. Read Ways to migrate multiple email accounts to Office 365 to decide which method works for you.


How to see your other email accounts in Outlook

You can use connected email accounts with Outlook Web App. This is useful when you want to keep your other accounts active if these accounts don't get a lot of mail and you might retire them in the future. This way, you can access your old, or personal email and contacts in the accounts from the same place as your Office 365 mailbox and still send, receive, and read email sent to those accounts. Connected accounts only work with Outlook Web App.

Note Office 365 receives information from connected accounts once every hour.

You can also add an account, such as your private Gmail account, to Outlook. To add accounts you need a version of Outlook installed on your desktop.

Once you have added an account, you can also see it in the Outlook Web App.