Starbucks withdrew an email promotion after it went super-viral, becoming too successful.

Starbuck's "Try your coffee" promotion offered customers a free drink through Sept. 30, writes DM News. The email was sent to a relatively small group of Atlanta employees and partners on Aug. 23, asking that they forward it to family and friends.

The email immediately spread nationwide - and Starbuck canceled the promotion, saying the redistribution had resulted in the offer's being modified beyond its intent.