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Thunderbird no longer sends emails from my standard account. Receiving continues to work without any problems. The provider is Vodafone with the .kabelmail.de address Screenshots show the settings. Otherwise these always worked. I've already set the TLS version to 1 in Thunderbird, without success.

The error message can be seen in German on the other screenshot and means in English:

"Failed to send message. Error sending message. The mail server responded: spam id=155817::1723829084-40E2144E-91888C35/29/1527808. Please check the message and try again."

Can no longer view passwords as I get a popup headed "Windows Security" asking for a user name and password. Tried several combination for the various email address without success. This has only happened within the last couple of days. Please advise

I have used Thunderbird for years, so updated to/ installed the latest version 128. This updated a few days ago and since then with almost every action there is a 20 to 30 second 'not responding' delay. Windows has not updated in that time, though it might be a windows issue.

hello tried a few things from help docs on line. nothing working. just keeps happening. tabs will say gah. your tab just crashed. works for a bit but once happens.... have to close whole firefox and open again. just started happening yesterday. I have used firefox for many many years never a problem. Something was not updated right. Please tell me how to fix this once and for all. if not I have to leave using firefox this is driving me crazy. terrible. Latest thing I tried was about:config - sandbox changed 2 items, 1 from true to false other from 6 to 0. as listed in this https://www.youtube.com/watch?v=_SIGynLjrjk

nothing has worked. Please help. thank you.

steve [email address].

I use Thunderbird to check the 15 different email accounts that I have to respond to. On the 4th of June it just quit sending or receiving emails. I tried deleting some of my emails but it hasn't helped. Do you think I haven't deleted enough or would there be another reason for it to quit working.

Hello. The latest update of FireFox 129.0.2 still has intermittent crashes. Sometimes I can't access my Google searches or links in emails don't work, then it works, then it starts to malfunction again. I have to restart my PC. Could you release a patch that works as well as before FireFox 129.0? On the other hand, Canal+ works perfectly Thanks. Kind regards.

I quit working for a company and my email account with them was closed. However, I like to keep the emails around just to have some history.So I am trying to disable the account without wiping it out of my thunderbird. Following advice from another question, I turned off checkboxes in my server settings (shown in image).However, regardless of this, whenever I open thunderbird and various other times besides, it pops up this demand for my password for that account (second image, note the banner at the top). How can I REALLY TRULY deactivate the account so that thunderbird will never again try to read anything from it?

I had a gmail account, I no longer have the gmail account. I deleted the IMAP and SMTP entries. I have no CardDAV entry for that account, no calendar entry, and no chat entry (that I can see; but that old account is lurking somewhere). None of my extensions use (user-configurable) credentials.

What else is there? Is there a way that I can search Thunderbird's config for the account username?

I'm about to screenshot settings, archive this profile, and start anew. I'd really like to avoid that, because I have collected >10 email accounts over the decades and setting everything back up all at once seems a hassle.

What are next troubleshooting steps? TIA for any wisdom or guidance.

As Google’s search features get more and more anti-user, it is more important than ever to be able to add the “&UDM=14” after receiving their newly formatted, pathetic excuse for results.

Something has recently changed that makes this impossible.

When on a Google search result page, attempt to edit the URL only allow editing the search query. There is already a location for this, the query field.

Hi everyone,

I recently updated my macOS to Ventura 13.6.9 along with updating to the newest Firefox Nightly; now whenever I try to launch Firefox, it just hangs and will never load the start page. If I give it about 5-10 minutes, it will eventually load the favorites bar, and then when I click into the address bar to type, it hangs again. If I give it another few minutes, I can type but hitting enter/return, nothing happens.

If I restart my MBP and hold shift to boot into safe mode, Firefox loads perfectly fine with no issues or hangs at all. I'm just not sure what is different that would be causing it to hang when booting into regular mode?

I saved the Apple crash report to see if that's any help for diagnosing the issue, here's a link to the .txt file - https://file.io/ZRVgd3A8jzoA

If there's anything else I can provide that would help, please let me know!

Thanks all!

I don't know if this is a system wide iOS issue or something specific to Firefox, but I'm not able to disable link preview when long pressing a link. I was able to disable it in Safari which also disabled it in iMessage, but link previews are still showing up in Firefox and Firefox Focus. It's very surprising for a browser focused on privacy and security. I should not have to make a connection to another server in order to see the URL behind a link. Automatically downloading from an unknown URL opens my device up to zero day exploits and privacy violations. Does anyone know how to disable this completely or submit a bug report to Firefox?

/edit: moved thread from (desktop) Firefox to Firefox for iOS section.

I am not able to search names in my individual Address Books. I have to scroll down the Contact List to find the name. How can I fix the Search feature in my Address Books?

continue in /questions/1424778 in Thunderbird section.

Having used Thunderbird for some time, I installed it on a new PC, and found that virtually all my emails on a particular account seem to have been deleted, despite the app being set up to retain them. I checked on the webmail (BT) and they have gone. The account is set up as IMAP - as is another account on the same server, which seems OK. BT won't engage with me on this as they "don't support third party apps" I assume that 3 years worth of important client history is gone for ever? Can anyone suggest what I did wrong, or is this a software failure?

I use Thunderbird as an email client, and a POP3 connection to Virginmedia to download emails. This has worked pretty well for years. In the last few weeks the email content has been very slow to load. Although the list of emails in the inbox in Thunderbird appears quickly, when I select an email to view its content there is a delay of perhaps 5s while it says 'Loading Message...'. There is a similar delay when deleting a message.

Once a message has been loaded, it can be re-visited without a delay, but if marked as unread there is again a delay next time it is read. This is also true if I work offline, so it can't be Virginmedia's server.

I have another account using an IMAP connection which doesn't suffer from any delay. Thanks if anyone can advise.