[cassianoleal]

I've been with them for a couple years. Also very happy with the service. Quite cheap.

I use it with my own domain and its been stellar.

[newscracker]

Do you use a mail forwarding service along with Posteo, since it doesn’t support custom domains on the service?

[cassianoleal]

Yes, in a way. My DNS provider, LuaDNS, has a pseudo-record of type FORWARD [0] which sets up both the MX records and the forwarding.

Other than that, I set up SPF and DMARC.

[0] https://luadns.com/help.html#forward-record