I started receiving ‘invites’ from AARP several years ago when I turned 50. I have always torn them up and enclosed a note telling them exactly what I think of their leftist organization. This last time, I sent it back, and demanded that they not contact me again. I haven’t heard from them since!
I just turned 50 and they have been sending me mailings asking me to join. Each mailing includes a postage paid return envelope. I put a tea bag in each envelope when I get it and throw it in the mailbox. I bought tea bags just for this purpose.