When you sign up for text (sms) based offers from Subway, you’ll get a free Subway sandwich! You’ll get a 6 inch sandwich of your choice and the only catch is that you have to buy a drink. Super easy and who doesn’t want coupons on their phone? I know, I do. Plus, Subway lets your order online too… my nearest location is two blocks away and is open 24 hours a day. Dangerous!