You can determine who, when, and where your emails were opened using Groove's email open tracking. You can toggle back and forth between "tracked" and "untracked" emails by checking the 'Track' button in the bottom left of your Gmail Compose window. 

You can automatically track all emails by following the steps below:

1. Click your Groove extension in the upper right and select the Settings icon.

2. Check 'Track emails by default' and press 'Save and Close.'

A feed of all of your tracked emails lives within the Groove extension:

Here you'll see useful information like where they opened the email and if they opened the email on a desktop or mobile phone.

Note: Groove will display that 'someone' opened an email when that message was sent to multiple addresses. This is a privacy / security measure, and is standard across all email tracking softwares.

Scan your inbox and hover over the Groove symbols to view your email opens and link clicks. This engagement is an aggregate of all the email opens and clicks in the email thread. You can even view if your email was replied to from a Flow!

Note: You can only be able to view them if you have email tracking on.

Any emails you track, will also now have the tracking history directly in the email thread:

Note: if you don't see the Email Engagement History in your threads, it could be missing because: (1) The email wasn't tracked, (2) you are using Gmail split view,  or (3) another extension is interfering with Groove  

You can turn off your email tracking notifications by clicking the Groove menu in your Chrome browser. Then click on the bell icon to toggle between "notifications on" and "notifications off".