Rated 5 out of 5 stars

This is an absolute Must Have extension. When I switched to Thunderbird I just assumed this feature would be built in but this extension saved the day. Try to forward an email to a list and be able to edit that list with out this extension... you can do it but it is VERY Cumbersome with out this extension.
Thank you to the developer :-)

Rated 5 out of 5 stars

adresy na určitou skupinu rozdělí na jednotlivé členy skupiny, dobré například když nechce odeslat na jméno skupiny, jako teď v poslední verzi 76.0b1

This review is for a previous version of the add-on (1.0.0). 

Thank you.
I welcome a czech (cs) translation. If you use github you can send a Pull Request:
https://github.com/revad/expand_mailing_lists/tree/master/_locales
Or send it to the support email address.
Dave