I’ve been trying to update my Lemmy with my proton e-mail, but I never get the verification e-mail. I only get the verification e-mail through my g-mail account.
I just realized I still had my old skiff email address connected to my lemmy account, so I just switched it to my Proton address, and I got the verification message immediately. I'm not sure why you can't. Could it be an instance-specific setting?
My lemm.ee accounts are all tied to proton email addresses. I think what the other commenter said might be the case, proton is filtering it somehow because it's a newly created account.