Kinda scary to have a chrome extension that can read all of your email. Is the cure more dangerous than the disease?
On the other hand it is not very effective as the block list is quite limited. 33 entires if I have counted well.
[1] - Check for yourself - https://gist.github.com/chew-z/7b70da3724626ab04cfc9676bee18...
Several examples are mentioned here: https://www.howtogeek.com/188346/why-browser-extensions-can-...