2 ms·I’d go AuthSMTP or similar rather than 365 for pure outbound as it will be much more cost effective.by Neil44 4y agoI’d go AuthSMTP or similar rather than 365 for pure outbound as it will be much more cost effective.saurik 4y ago(This is exactly what I do.)Neil44 4y agoI think it's a good service, I like that it can do DKIM on the outbound emails even though your 'main' MTA might not support it or might be a pain to set up.