This morning I backed into a discussion about thank you or followup letters.
The crew agreed they are good, and then devolved into email or snail mail?
I think we were missing the real point.
I think the purpose of a followup letter is to give the recipient something they want or care about. I usually find that within a day of a meeting I see some information about a subject they mentioned, so I send it on.
I am sending something useful to them, instead of, "That was good for me, wanna buy now?"
What are you sending?
ISS Solar Transit 2 - [image: Most people don't realize it, but they actually launch a new space station every few weeks because this keeps happening.]