My guy, reddit doesn't even care if your email is valid. Just use some keyboard spam like aocjd@sjd.aa, it will accept it

Its been a few years since I checked, but Reddit traditionally has not required an email. You can just leave the field blank and click next and it'll let you create an account anyway. The UX is a dark pattern.

Doesn't Firefox now include an email spoofer by default?

It keeps popping up to ask me on singup screens, and the one time I tried it seems to just provide a valid email and a forwarding service for TFA. I don't know if it'll work with Reddit or how effective the service is, though.

Try Firefox relay. It can set you up with a randomly generated email address that will forward to your regular email.

tutanota didn't require a phone number, last I checked

Mailbox.org ?

I use m.kuku.lu, but if you plan to have more permanent account on there, like me, there's one problem it has. It NEVER invalidates old cookie tokens, even after a password change. This means if you get compromised or forget to logout on someone else's computer, there's nothing you can do about it.

Edit: Forget it, they recently added "Log out on all devices" button.

Edit 2: At the bottom of https://aquapal.net/ it also says they use solar power, if you care about that.

Guérilla mail

The last time I used the registry process, Outlook didn't.

Try using simplelogin and configure it to your email provider you already have.

10min mail

Just use mailinator or any of it's alt websites. Sure, it's not like it's secure or anything because it's a public inbox, but I always end up making a zillion different accounts anyway.