In Thunderbird, I cannot send email. I am asked to enter an email address in Mail and Newsgroup Account settings but when I click on this option, nothing opens.
I can connect to Thunderbird and receive email. However, I cannot send emails. When I press send (either from replying to an email or entering an email address manually) I get the following error message:
Sending of message failed. No sender specified. Please fill in your email address in the Mail & Newsgroup Account settings.
When I click on the menu option within the email message Tools/Mail & Newsgroup, the message minimises and the programme returns me to my inbox. There is no Mail & Newsgroup setting on the mail programme.
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Sorry, I don't use Thunderbird and this is the Firefox support forum.
Thunderbird support is over here.
https://support.mozillamessaging.com/en-US/home
or here:
http://forums.mozillazine.org/viewforum.php?f=39