Reinstall Thunderbird
If any of the method does not work, you should finally reinstall your Thunderbird application. But before doing it, make sure you backup your profile folder to another location.
Takeaways
If the above methods do not work in your case, then it is time to connect with the technical experts at Mozilla Thunderbird Support Number. They will help you to fix the Mozilla Thunderbird email not working issue.
call us at : 1-800-460-9661 USA
visit here: https://thunderbirdmails.net/
You can also E-mail : info@thunderbirdmails.net