Minimize Email - Anonymously tell coworkers when they send too many emails 🙊
Right Inbox - Schedule Emails in Gmail To Be Sent Later
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Recurrr - Send recurring emails
MailTime - Go through your email as fast and easy as text-messaging
FollowUpThen - The simplest way to schedule an email reminder