This is a not so well known feature, not a bug. You can also make more aliases by appending text after a + in your email address. Sending email to miles.s.t.an

This is a not so well known feature, not a bug. You can also make more aliases by appending text after a + in your email address. Sending email to miles.s.t.andish+123@gmail.com will still deliver email to milesstandish@gmail.com. This is very helpful if you want to make multiple accounts on any website without going through the trouble of making multiple email addresses. Particularly helpful if you have multiple test accounts in your web application.