The Simple Postcard - Text a photo to mail it as a postcard
Socialkeeper - Cultivate your friendships
Mailjoy - Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
Thankbot - Drive more business with handwritten notes
NanaGram - Text your photos and we'll mail 4x6 prints to your Nana.
Thankster - Automagically send hand written cards