Knowing if someone that you sent an email message to received it and opened it can be very valuable information.

I’ve used Boomerang for years and while I don’t put a return receipt on all of my outbound email messages there are some that I do.

Boomerang also lets you schedule emails to be sent at a later time or date, it will send you a reminder if you don’t hear back from someone, and more.

Boomerang works with Gmail and Outlook. It also works on iOS and Android smartphone platforms.

Because it makes managing my email easier and less frustrating, and saves me a lot of time, it makes my list of Favorite Internet Marketing Tools.