Rated 5 out of 5 stars

The extension proves to be valid, fast, and fully functional. Despite this, having multiple Google Workspace accounts, I cannot understand why the launch consistently selects only one account. I am unable to modify this setting, and I would prefer the application to start with a different Google account. I have already attempted uninstallation and subsequent reinstallation, but the outcome has not changed. Your response would undoubtedly be appreciated.

Thank you for your feedback!
It's better to report issues on the support website,
but to answer your question, the add-on opens your default account by default.
This is the account that you signed in with first.

Therefore, if you sign out of all your accounts (by clicking on your Google profile picture in the top-right corner), and then sign in with your preferred account first, this account will be used by Open Google Chat.

You can find more information about the default account here: https://support.google.com/accounts/answer/1721977#default

I have documented the steps on the support page: https://support.tantely.fr/servicedesk/customer/kb/view/557121

I hope it will help!

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.