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

Thunderbird is suddenly not sending email

  • 7 replies
  • 1 has this problem
  • 6 views
  • Last reply by ext395

more options

Thunderbird is suddenly not sending email with more than one recipient. Still sending emails to a single recipient. As always, pop up window comes up showing Progress, bar gets to end, then just sits there, as in image. Not aware of any changes or updates. Turned off Malwarebytes, same result.

Thunderbird is suddenly not sending email with more than one recipient. Still sending emails to a single recipient. As always, pop up window comes up showing Progress, bar gets to end, then just sits there, as in image. Not aware of any changes or updates. Turned off Malwarebytes, same result.
Attached screenshots

All Replies (7)

more options

Who is the mail provider? This has been an issue with one service, Shaw, and sending with non-secure smtp settings.

more options

not Shaw. iPage. Thanks

more options

Are you using the secure or non-secure settings?

https://www.ipage.com/help/article/email-client-setup-thunderbird-78

The TB profile folder should be added as an exclusion in MWB settings.

more options

Secure settings, all match those listed in your link. I dont have the MWB Management Console, but I did list TB on MWB's "allow List". thanks

more options

Can you send to multiple recipients when there's no attachment?

more options

no, trouble with two emails to 3 recipients, one with attachment, one without. Tried to send to any 2 recipients, didnt work, but if I reduce to a single recipient, the mail goes thru attachment or not. Thanks for following up on this! I am at a total loss. 2 things I have noted. 1)I was on the west coast on the 12th, flew to NYC. This is on a laptop. Problem first notice on the 14th. 2)I think TBird updated on the 11th. Doubt I tried to send to 3 recipients after the 11th till this happened.

more options

Updated MWB, restarted 2 more times. Seems to be resolved......