[gmzamz]

Utilizing fancy gTLDs can still prevent you from receiving mail. Not due to a decision to explicitly block it but because it doesn’t match whatever regular expression they use to validate. Notably, .email fails consistently due to it being >3 characters. I tried to convert to using [e-mail] and there is a significant minority of sites that didn’t allow it.

[mindslight]

Good point! That's still kind of orthogonal to deliverability though. In fact in line with my point, you're better off finding this out before you start transferring personal correspondence to that domain.

The only similar problem I've experienced is sometimes companies will get uppity if you put their company name in the email address you give them. But it's easy enough to just make up a difference nonce for those cases (or start your scheme based on opaque nonces for everyone). I'm still waiting for the other shoe to drop and surveillance companies to start discriminating against non-surveillance-company email addresses the way they do against VOIP phone numbers.

[vel0city]

I've been using gTLDs for an email for several years now (about the time gTLDs came out). It was really rough going for a while but these last couple of years it's been rare for me to have an issue.