Inkly - send real printed cards with your own handwriting inside
Letterflix - Send letters and snail mail online to the USA, Europe, India, or anywhere in the world. Letterflix is the easiest and secure way to send letters and snail mail anywhere in the world from the comfort of your home.
Skip The Stamps - Snap or upload a pic to send a physical postcard in minutes
Letter to Yourself - Send a physical letter to your future self
Pitch Cards - I've 99 problems and I'm ready to pitch one!
DocuPost - Sustainably mail letters, checks & postcards online from 75¢