Tracking the sent messages have become the most popular feature in many of the messaging platforms and how would it be if this feature also exist for emails. Yes, it actually does, but not as an inbuilt feature in Gmail, but it is available as an extension in the chrome web store. And that extension is called the Mailtrack.
After you add the extension and installed it, it will ask for quite a few permissions just allow them.
From then it will show you tick marks for the emails that had been delivered and tricks with colour for the emails that have been read.
Thus using this simple browser extension one can easily track emails and their delivery status like they do for the messages in WhatsApp and various other messaging platforms.
Mailtrack is thus one of the best extensions that can be used for tracking emails in Gmail.