I have a .rodeo domain that I use for account emails. It is accepted 99% of the time, but I do fall back on a more common domain for a few websites that won't accept it as a valid TLD, including at least one Fortune 50 company.
I don't use it for outbound email very often, though. It's set up properly with DKIM/DMARC/SPF, but when I have used it for outbound email, it has failed to get through a couple of times.
That said, I do use a number of silly domains for web projects, and have never had an issue with any of them. I've heard it can be a negative signal for search inclusion on the major search engines, but honestly I couldn't possibly care less about that.
I don't use it for outbound email very often, though. It's set up properly with DKIM/DMARC/SPF, but when I have used it for outbound email, it has failed to get through a couple of times.
That said, I do use a number of silly domains for web projects, and have never had an issue with any of them. I've heard it can be a negative signal for search inclusion on the major search engines, but honestly I couldn't possibly care less about that.