Funny I had been planning to build something like this. My idea was that you would forward an email to the service and just type in the start of it when you want the reminder. Using some simple NLP you'd be able to write something like "next week" or "on Monday" and the system would then email you back when it wanted to remind you.

No need to have your gmail password, or even be gmail specific.

Is there anyone out there who would use this? Enough yeses and I'll build it.

That's one of the things that etacts (http://www.etacts.com) does. Though when this was discussed here a few weeks ago in http://news.ycombinator.com/item?id=1144560 a lot of people seemed unhappy about it being an external service that needed to permanently store your gmail password.

This seems really dysfunctional to me. "The ball is in your court, so I shouldn't have to do anything else..." and "right now, the person who follows up is the one who cares most about it." (not exact quotes)

Well, imagine you're on the receiving end, and it's an annoying email that you don't care to respond to. Do you want to keep getting automated repeats, where all the pain is yours, or do you want it to be somewhat painful for the person sending to have to take the time to re-send?

Yes, it's courteous to respond, even if to politely say "not interested, can't do it, go away." But to be auto-spammed if you don't!?

You could put that together with this: http://3mindme.com/

Say: "I would like an email back about this email in 1 week."

Disadvantages to this:

* Your email goes out to them and gets stored for that long.

* You have to remember to include it as a bcc on every email you care about following up with.

* It doesn't automatically snooze if you get a followup.

* You have no way of tracking responses (in, say, a DB).

But it's a cheap solution that will do the job. Otherwise, there are special CRM packages for this. Unfortunately, I don't know much about them.

I already do this with five labels, one for each day of the week. A plugin would be far sexier and save me 10 seconds for each sent email, but the overhead I have right now is more than worth it.

Even better would be to integrate the anti-shelving filter with a GTD app (I use Things) so that I don't have to create a separate task every time I want to create a followup reminder.

However, I would never want to send an auto-notification to the receiving party (often they're my customers -- how rude is that?).

I'd be annoyed if I was on the receiving end of the auto-reminder.

I had the same idea just last week...

I think it is a great idea given the amount of mail i send and have to deal with. many times i just forget to make sure i received a reply, and sometimes when i do its just too late.

This may even be useful for Google Voice. After hanging up a call have an option to be notified after a period of time if you haven't received a call back from the phone number -- or email from that same contact.

Those thinking of building something like that should check out http://www.clearcontext.com/pro/ that adds this feature in Outlook.

What's wrong with a "follow-up" or "waiting for reply" label?

I could use this please

spam, how so?

Indeed this would be very useful; however, the possibilities for spam are endless =/

That has to be the WORST lower-case 'f' ever. I had to make sure my laptop screen wasn't on the fritz.