[Liguma]

Please recommend a mail website in Onion.

[AnoIDX]

How about mail2tor and cockli?

[En3ronthegreat]

Mail2tor is the best option in my experience

[Miner21]

RiseUp if you can get an invite code

[Amaryllis]

Cockli if you don't care about your inbox being in fed reach, otherwise use the other recommended services. Depends on your threat profile really.

[paw]

i still wonder what happend to SIGAINT

[mentorific]

most will say its not easy to open but I managed to open a few accounts on protonmail using their TOR service, didn't have to prove anything or verify a phone number or anything of that sort, it works fine