Thankbot - Drive more business with handwritten notes
Love for the Elderly - Send kind letters to elderly folks without family
Felt for iPhone - Handwritten cards for the modern world
DocuPost - Sustainably mail letters, checks & postcards online from 75¢
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
Letter to Yourself - Send a physical letter to your future self