How to Migrate Contacts from 1&1 Webmail to Office 365?

The steps as follows will tell you how to migrate contacts from 1&1 webmail to Office 365.

  • Log in to the 1&1 WebMail interface

    If you have assigned your 1&1 Mail Basic or 1&1 Mail Business mailboxes to another domain or subdomain as described in the Migrating 1&1 Mail accounts to Office 365 article, you will have to use the correspondingly-modified e-mail address for logging into 1&1 Webmail.

  • Export your contacts from 1&1 Webmail in CSV format

    You need log in to your 1&1 WebMail account to export the contacts of yours.

  • Open the exported CSV file with Microsoft WordPad and save it again immediately

    This step is only necessary for importing the file in Outlook later.

  • Importing the CSV file in Outlook

    Please refer Microsoft Office Help: Importing Contacts into Outlook

That's all!