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I upgraded Thunderbird a few days ago to 141.0 (64 bit). Today, I note the spam folders in both of my email accounts are missing. So where is spam email going? Is the software automatically routing it into the JUNK folder? If not, how do I resurrect my spam folders?

Not sure which "topic" best describes my question, so . . . .

OS: Windows 11 Thunderbird 140.1.0esr

I have been using T-bird for several years, and have made to changes to configuration in recent memory. Beginning today, when I try to send an email through my Comcast account, it fails with the following message:

“An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555031.sys.comcast.net resomta-h2p-555031.sys.comcast.net EXMTP server not available.”

The outgoing SMTP server is configured as follows: Outgoing server: smtp.comcast.net Port: 465 Security: SSL/TLS

For comparison, sending email from my Android phone, using the Gmail client with the same server specs, also fails, thought it gives no information.

For more comparison, I configured Outlook to test with it, and it was able to send successfully. I noticed in setting it up that it used the same server name, but with port 587. Armed with that information, I changed the port setting in T-bird to 587. With that change, the send still failed but with a different error:

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

Any help is appreciated.

I'm an IT consultant trying to help out a poor client of mine who suddenly has been getting tons of nasty profane spam. Her email address must have gotten on somebody's bad list because this just started happening after years of relatively little spam. It comes in huge bursts.

We had turned to Thunderbird because it was supposed to be good at isolating spam. But no matter what I do, it won't move ANY spam to the Junk or Bulk folders. Yahoo uses Bulk so I told Thunderbird to use that folder. I also told it to use SpamAssassin. It is EXCELLENT at marking all these emails with the little symbol for SpamAssassin, but it doesn't automatically move them. And there's no rule system that can move them. I've tried it at the local level, account level, every possible setting, and the old ones stay in the Inbox and the new ones go directly to the Inbox. I've even turned off antivirus to see if that was interferring.

I really don't want to give up Thunderbird, but this isn't working and it's the reason we came to Thunderbird. Can anyone shed some light on this?

Following a recent update to Thunderbird, I lost connectivity to my email server. Here is the message from Thunderbird - "The certificate for pop.scdconline.org is not valid for that server." The current version of Thunderbird on my Windows 11 PC is 141.0 (2025072114:12:26). It was installed on 7/22/25 at 2:18:53PM. The last email I received through Thunderbird was on 7/23/25 at 6:18PM (EDT). I can still access the email account using webmail. Prior to this issue, I have been using Thunderbird for this email account since the first of this year with no issues. I'm out of idea, any suggestions?

Hi, I'm trying to save several msgs that have .jpg files within them (not attached) I save one by opening it, pressing M + H + Enter + A (to Save).

Can I do this w/out doing it for each msg?

Lots of work now.

Thanks.

If I send myself a recipe from a site on Firefox, I get this message.

Sending of the message failed. An error occurred while sending mail. The mail server responded: [VO-1] Message blocked due to spam content in the message.. Please check the message and try again.

On Thurs Aug24, TBird stopped recognizing my password for my email server. It stopped downloading new email messages

    Error message= Lgin to server pop.broadban.rogers.com with username summerby@rogers.com failed
     Rogers mail server sends email to my mobile email.

It won't send email...problem with smtp.broadband

Environment:

• Ubuntu 22.04
• Thunderbird 128.12.0esr

Background:

Yesterday (7/25/2025) Ubuntu ran an auto-update and appears to have updated tbird. At the time this did not affect tbird as it was up and running with the old version of code.

Today (7/26/2025), upon starting tbird and clicking on the Calendar tab tbird goes into 100% cpu utilization.

This issue appears to be related to changes in how recurring events are now listed under Calendar as individual events. For events with no ending date this new 'feature' now generates entries for the next 100 years (eg, 26 July 2025 - 26 July 2125).

Steps I've performed in an attempt to address the 100% cpu utilization issue:

1. shutdown tbird, renamed calendar-data/local.sqlite (effectively erase all calendar events), start tbird, click on Calendar tab ... little/no cpu utilization; great, cpu utilization is back to normal but my calendar is gone
2. shutdown tbird, put calendar-data/local/sqlite back in place, started tbird, do NOT click on Calendar tab, [menu] Events and Tasks -> Export -> saved all calendar events to an external *.ics file; shutdown tbird, renamed calendar-data/local.sqlite (effectively erase all calendar events), start tbird, [menu] events and Tasks -> "Import" -> import all (202) calendar events from the *.ics file; tbird goes into 100% cpu utilization for about 5 minutes and then becomes unresponsive
3. repeat of previous bullet up until the Import step; at this point I imported a single recurring event (happens once a month with no end date); tbird successfully imported the 1 recurring event and upon clicking on the Calendar tab ... I'm presented with 1200 individual event entries -> once a month up through July 2125
4. upon creating 1 event that repeats on a daily basis, tbird goes into 100% cpu utilization for a few seconds while it generates more than 36,500 individual events (up through July 2125) under the Calendar tab

At this point it appears (to me) that tbird's 100% cpu utilization and unusable UI is related to tbird having a hard time managing my 202 calendar events (most of which are recurring events - mostly monthly but there are several daily and weekly events, too).

This latest update of tbird is unusable!

Please rollback this behavior of expanding recurring events into individual events, or at a minimum give us a setting that keeps tbird from expanding recurring events into individual entries under the Calendar tab.

In the meantime, since tbird is running in a virtual machine, I'm rolling back to a previous snapshot and disabling Ubuntu's automatic updates of tbird software.

Is there a way to automatically delete duplicate emails received from a single private server? I am on several email lists on this server and if an email is sent to any one of these such as officers@ I get 2 copies of the email. If it is sent to say officers@ and info@ I will get 4 copies. If it is sent to me and any one of these addresses I get 3 copies. All the copies are exact duplicates. For some reason the server can not stop this and I am the only person that seems to have this issue. I would like to automatically delete these duplicates.

I have an organizational Microsoft Exchange account that I will shortly lose access to so am trying to archive all my email & attachments from it. For this purpose I installed Thunderbird & connected it to the account using exchange sync. I followed every method I could to try to get Thunderbird to download all the mail, such as selecting each folder as download for offline use. The folders appear populated by email messages. Despite this, when I simulate going offline by cutting the computer's wi-fi connection, Thunderbird is unable to actually open any of the "downloaded" mail. Instead, it shows a blank screen and cycles with the "loading" message in the bottom left corner. Only emails I had previously actually opened will load properly when offline.

The Microsoft Exchange account says that the account takes around 9 GB of storage with attachments. The local Thunderbird folder is only a few MB in size. How can I ensure Thunderbird *actually* downloads the mail and all its attachments so they will be available for offline use or equivalently, available when I lose connection to the mail account? Thank you.

I set the emails to be sorted by Threaded and in descending order by time, but I found that in the main email list, the order of the emails is correct, with the latest email at the front.

But the time order of emails classified under the same Threaded is wrong, with the earliest email always at the front.

I changed the time order in the settings, but it still doesn't work.

How can I solve this problem?

Since the last update, I am now on

 140.0.1esr (64-bit)

the search on multiple folders is never ending. The search ends quickly if on a single folder or a set of subfolders but never ends if on the parent folder.

It can go for hours and while it can find the emails I am looking for, the Search button becomes a permanent "Stop" and the task says "Searching" and the blue bar is dynamically changing trying to impart the suggestion that something is happening.

This bug did not feature on the previous "esr" version and wondering if perhaps there ought to be a further version, perhaps "eesr" for those who crave stability.

Since Wednesday I have been unable to send or receive mail with Thunderbird using the bellsouth account. I have had trouble with AT&T internet, but I believe that Yahoo has changed something on their mail servers. Can you help me to reconnect to my mail services?