Quote Originally Posted by Pazgaz View Post
Use + in the mail address you use.
For example, lets say my email is abcd@gmail.com and I want 4 diablo accounts (hence 4 b.net accounts) all using this email.
When I create the bnet accounts I use the emails abcd+diablo1@gmail.com, abcd+diablo2@gmail.com, abcd+diablo3@gmail.com and abcd+diablo4@gmail.com. this will register as different email in blizzard, but will cause all emails to be sent to abcd@gmail.com
It's worth noting that this is specifically a feature of gmail e-mail addresses, and does NOT apply to 99.99999% other mail hosts.

Another trick you can use with gmail is dots. if you have abcd@gmail.com, you will also receive the emails from abc.d@gmail.com, ab.cd@gmail.com, a.b.c.d@gmail.com, etc.