Their forum only permits sign-ups with Gmail and Outlook
I went to see if it was true because I found it hard to believe, but you are right. I don't understand why it is like this, given the nature of the program and the whole philosophy behind it.
I guess that we can consider ourselves lucky that they don't use Google's CAPTCHA.
Tomorrow I will raise an issue on their repo, I want to see what is the official stance on all this bullshit.
Had to create an account, but GitHub does not accept my self hosted email, so went to create one on protonmail, which asked for an email to verify I'm not a bot, so I went to tutanota, which is asking for a 48 hour period previous approval of my account in which I can't neither sent nor receive any fucking email.
Dude, I really hope that someone comes up with an alternative to this fucked up internet we have today.
Sorry for any mistakes, english is not my first language and my blood is boiling right now.
You can utilize a temporary email service to receive the account confirmation for ProtonMail. Just ensure you use one that has not been blocked by ProtonMail, so you might need to try a few different ones search something like temp mail and go to page 3 or 4.