Just received a letter from a penpal overseas, and with it a nice Special Edition, Christmas stamp I did not have yet. It's from last year, 2018, and I didn't know about the Slowly penpal letter writing app yet.
The app is great, Slowly allows you to find interesting people with shared interests and keep in touch via letters - not instant messages, but electronic letters, longer like a paper one would be, and which are not delivered instantly either.
They take time to arrive, depending on how far apart we are. From 3 hours or so for a close location, to 2 days to far away places like Australia, Indonesia, etc.
https://www.getslowly.com/en/ for details
great fun! @_lunawinters @Vishsai