Notif.me SDK - A Node.js lib to send all your transactional notifications
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
Inkly - send real printed cards with your own handwriting inside
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.
Only in Silicon Valley - Greeting cards designed to celebrate Silicon Valley culture
The Simple Postcard - Text a photo to mail it as a postcard