Provider info for Delta Chat


Needs preparation.

To use Delta Chat with 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”:

  1. Enter your Password to be able to make changes. Then click “New App Password”.
  2. Choose a new name for the password.
  3. At access, choose “Mail (IMAP/POP/SMTP)”.
  4. Click “Generate password”.
  5. Enter the 16-digit password shown there into the Delta Chat password field. Careful - leave out the spaces, it’s just 16 digits. Better copy-paste it.

Afterwards you can use Delta Chat as usual.

Custom domains

If your login email does not end with, you will need to manually type server information by clicking “Advanced” in Delta Chat and entering the details specified in the “Technical specs” link below.