[lazyeye]

A really nice feature of Fastmail is "virtual domains" where you can receive emails on multiple domains in the one inbox. It's a 5 min job to setup email capability (including wildcard addressing) on any new domain you get. They've made it very simple and easy to configure.

[mdaniel]

Another fun trick is their partnership with 1Password to make "masked emails"; all the fun of mailinator but with much less hassle: https://support.1password.com/fastmail/