My concerns with this site are the domain will get flagged as a spam / illegal content / threat domain. Which will impact anyone trying to use it as real email.

With no identity / payment gateway it’s inviting people to abuse it.

Being able to attach files to emails sent anonymously is going to intice bad behavior by bad actors.

I like the idea, free anonymous email, it’s my kind of crazy. But when running such a site we need to protect it from abuse or the site will die.