Rated 5 out of 5 stars

Great! I like it much. Could you make clones for: Google Keep and Google Messages, please?

This review is for a previous version of the add-on (1.0). 

Hi, thanks for the review!

Sure! You can find them there: https://addons.thunderbird.net/thunderbird/user/tantely/
Note that the one for Google Messages is experimental, as I don't use this service.

Alternatively, you could try my other add-on: https://addons.thunderbird.net/thunderbird/addon/quick-spaces/ to add custom addresses.