This database is archived.
It is no longer maintained and receives no further updates. The information on this page reflects the state of May 2026 and may be outdated or wrong by now.
For chatting, we recommend a chatmail relay instead of a classic email provider.
If you run your own mail server, the most reliable way to make it
work with email clients is to publish an
autoconfig file
at
/.well-known/autoconfig/mail/config-v1.1.xml on your domain.
To set up a profile with a third-party classic email provider, you may need the "advanced settings" during profile creation. Please consult your provider for the required server settings.
Fastmail
Needs preparation.
To use your Fastmail email address you have to generate a specific password for it.
You can do that in the Fastmail web interface at “Settings / Account: Password & Security / Third-Party-Apps: Add”:
- Enter your Password to be able to make changes. Then click “New App Password”.
- Choose a new name for the password.
- At access, choose “Mail (IMAP/POP/SMTP)”.
- Click “Generate password”.
- Enter the 16-digit password shown there into the app’s password field. Careful - leave out the spaces, it’s just 16 digits. Better to copy-paste it, which will always paste without the spaces.
Fastmail supports any of its domains being used as an alias regardless of which you registered with, however the email and domain you picked during registration is the one they use for your “username”. If you are setting up an alias other than the email you originally registered at Fastmail with, you willl need to use “Advanced” during setup.
Aliases and Custom Domains
The email address you’re using with the app should be entered as the “email” address, while your Fastmail webmail login email address (the one you registered with originally) should be used as the “IMAP Login Name” and “SMTP Login Name”. Your “password” and “SMTP Password” should be the 16-digit password generated for you by Fastmail.
For security, the SSL/TLS settings should be explicitly selected and used for both IMAP and SMTP, and “Strict” for the Certificate Checks. Allowing to use “Automatic” for any of these risks an automatic security downgrade in the unlikely event an error is encountered.
Last checked: 2022-01