Email One-Time-Passwords

MailFlow Relay uses email-based login, we do not manage passwords for users. We do support passkeys as second loing option.

Configuring expiration

You can change the lifetime of tokens under auth.otp.expiry.inSeconds. This value is send in human readable form in emails and shown on the web-UI.

Configuring the OTP Emails

You can customize the source email used for OTP mails, defaults to noreply@.

You can change the priority of OTP emails. It is usually a good idea to have this be a high priority to interupt long send jobs and prevent expiration before delivery.