The click tracking feature allows you to know when the links in your emails have been clicked on.
To use this feature just add links to your emails using Gmail's 'insert link' tool.
Please note that you would need to add http:// or https:// to the beginning of the link URL (depending on the website being linked) in order for the click tracking to work.
You can check whether the recipient has clicked the link's in your message in the following ways:
1) By placing your mouse over the green double checkmarks that appear in Gmail.
2) Going to the Click Report in your Mailtrack dashboard.
3) Via Real-time Link Tracking Notifications and Link Click Email Alerts (to receive these types of notifications, enable the Real-time link Tracking Notifications and Email alerts when your links are clicked options in your Mailtrack settings ).
If you've chosen to receive a Daily Report email (see here for more details), you can also see the percentage of clicks on the links of the messages sent the day before.
You can enable/disable click tracking in your Mailtrack settings.