Calling ISP tech support because their website is useless.

-"Hi, what's your SMTP server address?"
-"Our what?"
-"SMTP? For outgoing email?"
-"I can set you up with an email address but I don't think you can use this sort of protocol."
-"This proto... it's just standard email protocol. You definitely have this server."
-"This is internet support, if you need our server hosting support, that's a different department. "
-"No, I'm pretty sure basic email configuration belongs to your department."
-"I'll check and get back to you."

☎️ :blobcatneutral:​

I ended up finding the SMTP address myself.