I know I'm probably pretty late to this, but looks like cock.li is under some legal trouble. If you can, please donate to them. I really like my E-Mail not being deleted and not having to use an E-Mail with my full legal name in it for a piracy website.
However, if I need to, I will switch to a Proton E-Mail (even though that'll probably get me fucked over by Europol if my site ever does become popular enough)