MyPostcard - Send real photo postcards and greeting cards - worldwide, from any place to anywhere.
The Simple Postcard - Text a photo to mail it as a postcard
Postsnap - Postsnap's iPhone app is the best, free postcard creator. Make & send real printed postcards, greeting cards, invitations and announcement cards using your own photos.
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.
meeba - Meeba gives you real-time travel information and help everywhere you are from people who are there...
NanaGram - Text your photos and we'll mail 4x6 prints to your Nana.