ProductiveMail lets you know in real time when your emails are received and read.Its main benefits are:- Make sure that your outgoing emails were received and not blocked as spam. - Reminders to follow-up emails you are waiting for an answer.- You can customize the image and text the recipient will receive in the message footer. - Individual read receipt for every recipient when emails are sent to multiple recipients. - Real time notifications when an email you sent is read for the first time. - Local viewer with detailed information about the status of your messages: the date and time they were sent, the date and time they were read and the time elapsed between both events. - You can configure the notifications and warnings that ProductiveMail will use to keep you informed about all events. - You can hide the message footer to make the read receipt completely invisible. - Your messages are never stored or routed through our server so your privacy is always guaranteed.