SMTP servers wouldn't work on Railway cause you'd need to expose TCP port 25 for SMTP to work and the problem with doing this on Railway is you cannot define the ports that're exposed with TCP

N/A

You can host an SMTP client on Railway though, assuming the SMTP server is somewhere else (maybe resend or something)

Hmm thx

what fragly said is true but you can tell your SMTP client to connect to Railway's random TCP port.

!s