Follow up and recurring emails

Use:

http://FollowupThen.com

Send an email to, for example:

Daily1800@followupthen.com

And the email you send will be sent back to you at 6pm each day (including instructions on how to cancel or edit the recurring reminder)

other examples:

1minute@followupthen.com

Will email you back in 1 minute...

Also:

2hours
3days
4weeks
5months
6years

Follows up on the next occurrence of the specified time.

11am
1132am
1630
1500
mar30
22april
1Jan2014
9amSept14th2015

Source