Hey, that's lovely, and I'm glad.

I did simplify the ecard send/receive mechanism - there's been four or five different iterations of the app, and validating emails was nightmarish. As of a few months ago I just let people create and copy-paste 'links with messages', which has made my life considerably easier.

I did print 1000 boxes of postcards years ago - in about 2012, I think. they turned out looking really beautiful, in print. It's a funny story, actually, because I put them on Amazon and forgot all about them, entirely (I was working a full-time job at the time at a university). I still have a few hundred boxes left I've been giving away to people.

I've had a few people contact me in the interest of facilitating that service, but they seemed kinda slimey. I think you're right; I should probably set up print-on-demand. But again, side projects, huh?!