How to set up an email in macOS Sierra Mail


Alternatively follow this tutorial to manually set up you mail account:

This guide will show you how to set up Mail in macOS Sierra. If Mail is already set up but giving errors, refer to our macOS Sierra troubleshooting guide.

Replace with your domain name

This guide defaults to IMAP and No SSL

Add a new email account

  1. Launch Mail.
  2. From the toolbar at the top, select Mail and then Add Account…

    Other Mail Account

  3. Select Other Mail Account…

    Account Information

  4. Enter your details
    • Name (which will appear in the ‘From’ field when you send emails)
    • Email Address
    • Password (Forgotten passwords can be changed in konsoleH)
    • > Sign In


    Server Settings

  5. Complete the settings as follows:
    • User Name is the full email address
    • Account Type is IMAP or POP according to preference (IMAP is the default)
    • For domains still in transfer or propagation, temporarily use the IP Address in place of Incoming & Outgoing Mail Server
    • Ignore Unable to verify account name or password
    • > Sign In


    Server Identity

  6. Ignore the 2 server identity messages > Continue

    ♦ You can add the certificate to your trust settings to avoid seeing this message in the future.


  7. Select any apps > Done
    Your Mail account is now set up.
    You will see your new account in the list with any other mail accounts.However, to avoid any future issues, continue with these few tweaks:

    Further settings

  8. From the top menu choose Mail > Preferences…

    Account Information

  9. On the Accounts tab, choose your new account from the list on the left, and then click Server Settingskh-sierra-accounts

    Server Settings

    Now for some important customisations:

  10. Deselect (uncheck) the boxes for Automatically manage connection settings for both Incoming and Outgoing Mail Servers –additional fields will now be displayed.
  11. Select Advanced IMAP Settingssierra-advanced-imap
  12. Select Allow insecure authentication > OK
  13. Deselect (uncheck) the boxes for Use TSL/SSL for both Incoming and Outgoing Mail Servers.
  14. Under Outgoing Mail Server (SMTP) click the dropdown arrow at Account
  15. Select Edit SMTP Server List
  16. Tick Allow insecure authentication
  17. Click OK and Save. (Note: this button only becomes visible when settings have changed)