Email from amethyst not working

[JPFINsupport]

I'm trying to setup email for Amethyst sending, but can't get it to go in any way.
I've even registered a new domain so I can play around with the authentication settings - no luck.

Tried to look for similar problems on the forum - no luck there either.

Attached is a screenshot of what I have in there now. I have that same account on my email client and checked it can send emails.
The Amethyst logs also strangely don't show anything about these emails settings - in fact it is still showing errors on previous email settings, which is totally different from the new settings.

Any ideas?