DearEle - Email reminders made easy for everyone 💌

FollowUpThen - The simplest way to schedule an email reminder

Reminder - A better way to keep track of your reminders 📝

Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.

Collaboration Toolkit by Mailjet - Think Google Docs for email template creation 💌

Stable Reminders - Stable Reminders are email notifications sent directly to your inbox before important federal and state filings are due.