Setting up Windows 10 Mail

The instructions and screenshots in this setup guide are for the Mail application on Windows 10.

Windows 10 Mail needs its own app password to access your information. If you use your normal password, emails won't download to Windows 10 Mail and you will see a password error.

Set up your email

You can easily add your Fastmail account to Windows 10 Mail using the setup guide in Settings → Import & Setup. The general setup instructions are as follows:

  1. Open Windows Mail and click into the Accounts screen. Select Add Account.

    Add Account within Windows 10 Mail

  2. On the "Choose an account" screen, select Advanced set-up.

    Screen to select Account type


  3. On the "Advanced set-up" screen, choose Internet email.

    Advanced Setup screen


  4. On the next screen, enter your account details. You may need to scroll down.

    • Email address: Your full Fastmail email address, including the domain.
    • Username: Your full Fastmail account name in username@domain.tld format.
    • Password: Your Windows Mail app password. (What is an app password?)
    • Account name: How Windows Mail will refer to this account in future. This is not shown to anyone else.
    • Send your messages using this name: This is shown in the From: field of your emails.
    • Incoming email server: Set to imap.fastmail.com
    • Account type: Set to IMAP4
    • Outgoing SMTP server: Set to smtp.fastmail.com
    • Outgoing server requires authentication: Leave enabled.
    • Use the same username and password for sending email: Leave enabled.
    • Require SSL for incoming email: Leave enabled.
    • Require SSL for outgoing email: Leave enabled.

      configuration screen to enter Fastmail settings


    Click Sign in.

  5. Congratulations! Success!

    Configuration successful message

Set up your Calendar and Contacts

Windows 10 only supports a limited number of external Contact and Calendar servers. You will need to use a third party plugin to work with Fastmail. We haven't tested any plugins from our end, but you are free to choose one. Unfortunately, we are not able to provide support for troubleshooting and maintaining the third party plugins, as these are not hosted on our service.