[buu700]

> [e-mail]

Just be aware that this may be very confusing to customer support agents: https://news.ycombinator.com/item?id=32475178

[rsync]

FWIW, I have been using the [e-mail] auto-alias for many years now and I've never had it challenged nor rejected by a human or a machine.

[chrismorgan]

I’ve also been doing it for quite a few years, and I think I had it rejected by a machine once, and I had it questioned by a human once.

I’ve had way more problems from systems that think TLDs are two or three characters (which has never been true).