Canned Emails (no hyphen) is a free service offering just that. And boy, do they sound canned. Here is “it’s been a while, let’s catch up”:
Subject: Hey. How’s it going?To which the appropriate (canned) reply might be “received task, will do later”:
It’s been a while since we’ve last talked!
How are you?
I just wanted to catch up with you and see how you’re doing.
Hit me back, and let me know what’s happened since we last talked. I’d love to catch up.
Subject: Got it. ThanksFile under O brave new world.
Just a heads up: I’m extremely busy right now, so it will take me some time to get to this.
Please remind me again if I don’t get to this soon.
Also, let me know if your priorities change, and you no longer need this finished.
A related post
Sample letters, 1952
[I’ve added proper apostrophes to the canned messages. Couldn’t help myself.]