How to know if the recipient opens your email
Email Oracle can be the perfect tool if you want to track email opens. Email Oracle as of now is available for Gmail users only. It is downloadable as a Firefox addon. After you install it, you’ll need to authenticate it for integration with your Google Account. When this is done, you’ll find a “Tracked Emails” link on your Gmail navigation. You’ll also see an Email Oracle Dropdown towards the top of Gmail’s interface.