Here are some places that will send emails for free birthday food and/or coupons.
Dairy Queen
http://www.dairyqueen.com/us-en/
Marble Slab Creamery
http://www.marbleslab.com/
Cold Stone Creamery
http://www.coldstonecreamery.com/
Ruby Tuesday
http://www.rubytuesday.com/
Red Robin
http://www.redrobin.com/default.aspx?AspxAutoDetectCookieSupport=1
The Melting Pot
http://meltingpot.com/
Red Lobster
http://www.redlobster.com/
Outback
http://www.outback.com/
Texas Roadhouse
http://www.texasroadhouse.com/become-vip/
Not sure if these places send coupons but they have a mailing list you can get on
Johnny Carino's
http://www.carinos.com/page/home
Cheddar's
http://www.cheddars.com/
These are just some of the places I know about :) Please feel free to add more in a comment
