With Mailbutler's Tracking tool for Apple Mail, Gmail and Outlook you can keep track of emails. Mailbutler updates you on the status of your sent emails with receipt confirmations.
Mailbutler's Link Tracking feature allows you to keep track which links your recipients are clicking on, and can even notify you every time someone does.
Mailbutler allows you to see how many times your emails are opened, in which location, which links have been clicked, and even on which type of device.
With Mailbutler you can track your emails and Mailbutler can tell you anytime one of your emails is opened, so you never have to wonder when to follow up with someone.