Mailtrack for Gmail has both free and paid versions. Here's how to check whether you've got a paid plan or if you're using the free version of Mailtrack:
2) Open the profile menu and click Subscription and billing.
How can I change my Mailtrack plan?
There are various ways to change your plan, depending of course on the plan you currently have. If you'd like to know more about changing to a different plan please see this article.
How can I cancel my paid plan renewal?
There are 2 ways to cancel the auto-renewal:
How can I upgrade my Mailtrack?
If you want to take your email tracking experience to the next level, you can upgrade your Mailtrack account here.