[MlMt] Changing SMTP server for particular domains?

[Jack Saturn]

Hello all,

Is there a feature within MailMate that will allow me to designate a 
particular SMTP server to be used when sending messages to specific 
domains?

For the longest time I used Hostgator and Gmail servers for SMTP, but 
for whatever reason I kept having messages go undelivered or show up in 
the recipient’s spam folder.

After reading someone on the Mailmate mailing list mention Mailgun, I 
signed up for an account and starting using their SMTP servers about 6 
months ago. The benefit is that I can check the outgoing mail logs once 
a day to see if any of my sent messages didn’t get delivered.

The only downside is that Mailgun is primarily a service for bulk 
mailers, and so they often get flagged for spam. I have no problem 
sending to Gmail addresses, but often messages sent to Yahoo, Hotmail, 
Live.com, etc., will fail.

As a workaround, I started using the Alternative SMTP function in 
Mailmate, detailed here:

https://manual.mailmate-app.com/hidden_preferences#alternative-smtp-server

And here:

https://lists.freron.com/mailmate/2016-January/005366.html

The only limitation now is that I have to remember to switch to my 
alternate SMTP server each time I’m sending to someone from one of 
these domains. If there’s a way within Mailmate, possibly as an 
offshoot of the Alternative SMTP Server option, I’d love to be able to 
compile a short list of these problem domains and give them their own 
SMTP server, so that I won’t have to manually switch back and forth 
(as I often forget to do so).

Thanks for any help y’all can provide!

Jack