What are Gregory letters?

Hello beautiful person that's reading this ^w^
Meet my OC Gregory, a little happy snake who likes writing nice letters to people who need em. I wanna use this dude to spread kindness. So, if you could, write a nice letter to somebody you know.
Or draw Gregory with a nice message in the description and tag it with #gregoryletters for the entire world to enjoy.

Let's share kindness <3