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.
Future Me - Send an email to your future self
DocuPost - Sustainably mail letters, checks & postcards online from 75¢
Letter to Yourself - Send a physical letter to your future self
Letter to my future self - Letter to my future self is a prominent email scheduling service that gives you the opportunity to create a letter with goals and thoughts for your future self and schedule a date for sending it.
Love for the Elderly - Send kind letters to elderly folks without family