Cost / License
- Free
- Open Source
Platforms
- Online



Tab Snooze is the most popular Open Source alternative to FollowUpThen.
- Tab Snooze is Free and Open Source
FollowUpThen is described as 'Email followups, scheduled as easily as this: 2minutes@followupthen.com. Clear out your inbox by forwarding emails to FollowUpThen. Make sure your emails get responses. SMS Reminders. Easy reminders — an email away' and is a todo list manager in the office & productivity category. There are more than 10 alternatives to FollowUpThen, not only websites but also apps for a variety of platforms, including Google Chrome, Gmail, Microsoft Outlook and Chrome OS apps. The best FollowUpThen alternative is Gmelius. It's not free, so if you're looking for a free alternative, you could try Boomerang Mail or Yesware. Other great sites and apps similar to FollowUpThen are SalesHandy, Followup.cc, Vocus.io and SendRecurring.



Tab Snooze is the most popular Open Source alternative to FollowUpThen.
Rebump sends friendly follow-up messages to your email recipients for you. These automated emails are customized to appear as if you sent the email yourself. You can track and analyze all of your follow-up emails with your Rebump account.


MailTag is your all-in-one free Chrome extension for email tracking, scheduling, and auto follow-up.




E-mail Follow-Up Microsoft Outlook add-in can monitor sent messages which keep being unanswered. This add-in allows you to set the period of time that the sender should wait for the reply. If the reply isn't received within the specified time the program will notify the...

Bumper is a stripped down version of FollowUpThen, followup.cc and nudgemail that lets you host your own email reminder service.
Bumper is the most popular Self-Hosted alternative to FollowUpThen.
Mailreminder.net is the product of some of my own frustations with trying to remember stuff during the day. I have tried numerous todo list apps and websites to keep up with requests that end on my inbox.
MailFred let's you temporarily archive and set reminders for GMail. Mails will come back to your inbox when you need them. And the best: MailFred serves you for FREE.