Went to the replies to say this. You got here before me

Fair mistake to make, they have a very similar colour scheme I can see. Happy to hear of yet another mail provider to consider, I want to hear about as many as possible; I want to make the right choice

As far as I can tell from posteo’s own FAQ site, they do not allow custom domains. I’d really consider swithcing to them otherwise. Do you use posteo?

I’ve been through the same. I was so sad to learn this. This is what personal growth looks like, you learned a thing today. Be proud of yourself