Yes, you are right. With Gmelius you can automatically protect your privacy by blocking email trackers.

Gmelius adds over 40 new functionalities to Gmail. On top of what you’ve listed there is also: A To-do app https://gmelius.com/todo-list-gmai…, a way to protect your email provacy by blocking email trackers https://gmelius.com/gmail-block-tr… , the ability to personalize your Inbox and remove ads https://gmelius.com/pe…

Even though using this script is free, it’s not all that user friendly and quite hard to implement. A simpler alternative: https://gmelius.com/schedule-email…

There is also Gmelius https://gmelius.com/markdown-gmail… that offers a way to use Markdown within Gmail. (It’s free)