It's very tld dependant. .com and .edu have been there forever, so there are no problems. But .xyz are usually spammy domains, so they are rejected by default.

It's very tld dependant. .com and .edu have been there forever, so there are no problems. But .xyz are usually spammy domains, so they are rejected by default. My personnal .email address is also often rejected because the tld is quite recent. The sites I have the most problems with are: - small shops - state own ones - public utilities Some bugs are not even pure rejection. E.G: my electricity provider, for the longest time, accepted my email when subscribing or using "forget password", but not when login. On site once tried to autocorrect my email (!), to "fix" the tld.