So… if you have a Gmail email account from Google… you apparently have two email addresses. The obvious one is the good old fashion @gmail.com and the less known one is the @googlemail.com. Not earth shattering news, but filed under the good to know section of my small brain.
Use one for friends, and one for online sites, etc… Then you can filter the incoming mail against the “to” address.
{Via Digital Inspiration}