Comment by c12
3 years ago
I have heard people say "vanity TLDs are bad" but never experienced it myself.
I have email addresses at .co.uk, .digital and .social never had deliverability issues with sending or receiving.
When I worked at a large (100m emails/wk) email service provider the key thing was sending IP reputation followed by things like DKIM and SPF DNS records on the sending domain.
IP reputation would be an issue if you self hosted your email, but using a reputable provider such as tutanota and fastmail should pose no issue.
It's a single data point but a friend of mine had an outage with ".online" in switzerland.
We resolved it by pointing clients to use google dns.
Never had similar problems with .com