Ever need to set a quick reminder without having to fire that calendar or to-do app on your phone?
With FollowUpThen, you can create custom reminders by simply sending an email message to a particular message. For instance, send an email message to email@example.com and it resend that message to you after two weeks.
Similarly, if there’s a message in your mailbox that you need to act on, say, after a month – just forward that entire message to firstname.lastname@example.org and it will magically reappear in your mailbox after a month.
To setup a recurring reminder, you can send the message to an address like email@example.com or firstname.lastname@example.org for getting a reminder every 10th of a month.
FollowUpThen is a free service though the premium option allows to you create SMS reminders as well.
FollowUp.cc is also a good alternative to FollowUpThen.