I switched from Gmail to Proton, but now with everything coming out about Proton I’m switching from them too. I started using Posteo which I like but a lot of my accounts having to do with money and finance (including my bank) aren’t accepting the Posteo email. They have rejected it over and over and even locked me out stating that I was hacked.
Do you guys have any recommendations for email providers to use that also won’t send red flags to my more official accounts?
If it helps, I’m US-based.
If Gmail is rejecting your custom domain, you haven’t setup your SPF, or DKIM records etc for you custom domain that authorizes proton to be a valid email sender.
E.g when Gmai receives an email from a custom domain it will look up records to confirm the mail server sending it is valid.
Checkout https://proton.me/support/anti-spoofing-custom-domain or search proton SPF DKIM for guides.
You wouldnt have issues sending from a proton domain as they already have these in place for you.
I 100% did set them up from day one, and for several months every mail I sent from my domain to gmail got rejected, so I stopped trying.
I did a couple of tests today and it seems to be working now, so I guess they are doing more than just looking at the DNS records.