He'd leave little notes on my desk sometimes, saying 'Stick with school,' or sometimes he'd send a postcard from his business trips saying the same thing.
Instead, he settled for a postcard to her and one to her son, each with a bland "Having a great time" message.
What did you do, use the address on the postcard he'd filled out for her before you killed him?
In each CD you sell, include a self addressed postcard asking for name, address, and email address that people can mail back to you - then add these people to your mailing list.
This can simply be included in the wording along with your phone number or email address or it can be included as a stamped RSVP postcard that your guests can simply drop in the mail to let you know they're coming.