One intuitive workspace to manage your Emails, To-do's, Projects, Sales, Client Service, CRM and Teamwork ... right in GMAIL!
SendRecurring - SendRecurring allows you to setup, send, and maintain scheduled email reminders.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Recurrr - Send recurring emails
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
FollowUpThen - The simplest way to schedule an email reminder
KanbanMail - A Kanban board for your emails.