This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Sending emails

  • 2 replies
  • 2 have this problem
  • 5 views
  • Last reply by avsafe

more options

For some unknown reason I am suddenly unable to send emails from my Thunderbird account. I can receive but not send.

For some unknown reason I am suddenly unable to send emails from my Thunderbird account. I can receive but not send.

All Replies (2)

more options

What exactly happens when you click Send?

more options

I get the following message

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) mail.shaw.ca was lost in the middle of the transaction. Try again.