Welcome! The fact that you’re reading this means that you probably care deeply about the issue of privacy, which warms our hearts. Unfortunately, even though you care about privacy, or perhaps because you care so much about it, you may feel that there's not much you (or anyone) can really do to...
After all the fuzz about Mullvad having used Gmail for email and now self-hosting, have you checked what EFF uses for email ? So long privacy !
Well, I have, have you?
From their website: Legal Assistance and General Information
For legal assistance requests, general questions, or miscellaneous queries: info@eff.org info@eff.org PGP public key GPG Key Fingerprint: F2F2 1BB8 531E 9DC3 0D40 F68B 11A1 A9C8 4B18 732F Signal Number (text only): 510-243-8020. To verify it's us, you can check the safety numbers for the conversation. Either the first half or the second half of the safety numbers should read one of the following:35593 90536 26981 58470 03363 72867 or 38948 48795 16727 63104 76636 96731.
Look up their MX records : Microsoft email