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I have used Thunderbird for years and years and never had a problem. The last 2 weeks all of my outgoing emails have been going to everyone's SPAM folders. I have an AT&T email account and I use the AT&T Pop server settings, for the Outgoing Server I have the Comcast/Xfinity settings. I receive emails with no problems, it is my outgoing emails only. I don't know if it is a Comcast problem, an AT&T problem or Thunderbird problem. I have been on the phone with Xfinity for 2.5 hours and still having problems. Any suggestions.

This product use to be simple. But now will not let me see the whole layout . Have to chase it across back to the begining. Been with this program over 15 years. Now i Hate it! Arthur Lovett as my father would say Keep it Simple and workable.

I have been using Thunderbird email for years. Recently, I have gotten this error message: Connection to server mail.5starpros.com:465 failed. I have checked all the settings and they are right for my domain. I called the hosting service to check for email on their end and everything is fine. This message is blocking my domain at 5starpros.com. But, in Outlook on the same computer the same email address is working just fine. Thunderbird has the same settings and is getting my email. Is like my PC is blocking my email address. Can anyone help me with this. It is very distressing.

I would like to follow up on a query I posted earlier this year at https://support.mozilla.org/en-US/questions/1565806

Briefly, I want to move some more prior years' archived folders and messages to TBird's Local Folders. My effort to simply drag and drop the archive to the new location ran into trouble because (as I understand) the archive flag was not turned off in the move, leading to anomalous results. Is there a standard approved way to move archived messages to local folders, or should I just drag and drop and de-flag again?

From my earlier query: > Installing the folder flags add-on showed me (as you said) that 2024 was flagged as an archive. I turned the flag off, restarted TBird and 2024 now comes after 2023 as it should. I expect I created the problem somehow when I moved the 2024 folder from the server to Local Folders; what is the proper way to do that?

TB address book has duplicate entries or other entries that will not delete or edit? Tried to even change the name. Close reopen and it reverts back to original. ??? Thanks for the help.

I am okay with just being sent the download for win 10 or 11 because I'm not sure why its even giving me such a out dated version. (side note I do want to mention that it is amazing Firefox has the option and goal to let you install a different operating system instead of locking you out to just a Linux version and i do want to say i don't use Firefox as my main browser but a back up from now on because of the accessibility)

Hello,

When I forward message with some attachments, new windows opens, with e-mail and attachments, and I can open and review them. If I edit (or not) that message, for no more than couple minutes, I can send it without problems.

But if I left windows open for some time (let say more than 10 minutest, but I not figured out exact amount), I can't view attachments. If I double-click on icons, nothing happens. If I try to send that message, I get message about missing file.

I've noticed, that after opening new window with forwarded message, attachments are copied to %TEMP% folder as nsmail.pdf (or jpg or something). After some time (10 or more minutes as mentioned before) these files disappear, and then problem begins.

The same problem occurs with MAPI generated message with attachment.

Problem tested at two PCs, one PC with 32bit viersion of TB and IMAP, and another with 64bit and POP.

On my wifes PC Firefox appears to be doing random things. First the screen turned pink, then the taskbar icon has a gear-wheel overlaying it, and she is unable to do anything, like logging into zoom. Google searches work but clicking on any link goes nowhere and just sits. Is there a way of returning to it's previous boring but appreciated habit of just working, without uninstalling and re-installing from scratch please? thanks (she is currently using our fallback laptop in her office so I can't access her pc for an hour or so.)

I have installed Thunderbird in my new computer and moved the entire contents, accounts, etc. from the old one to the new one. Alas the Local Folders did not follow. Therefore to move my Local Folders from Thunderbird in one computer to another I have followed the following procedure:

On the old computer, go to Help > Troubleshooting Information > Profile Folder and click Open Folder.Exit Thunderbird.Open the Mail folder, then enter the Local Folders directory.Locate the large files without extensions (e.g., Inbox, Archive) and any corresponding folders ending in .sbd.Copy these files to your USB drive.

I do not know where I should put these folders in my new computer so that they will appear under Local Folders in my new computer.

I have downloaded the latest version of Thunderbird. The old computer uses Windows 10 and the new Windows 11. I have put the folders on the desktop of my new computer pending the reply to where I should put them so that they appear in Local Folders.

Thank you for your reply.

Hi... I have switched from Google to Thunderbird and am using my old Gmail address: viewegm11@gmail.com on Thunderbird with not problem. Before moving over, I imported all of the email files over to Thunderbird...(old emails and the like).

Now Gmail has sent me a notice saying that I have no more space on the Google server and that I soon won't be able to send or receive emails via Google. Does this apply to Google only or to Thunderbird, as well?

In sum: I no longer log into Gmail or Chrome at all... I am using Thunderbird ONLY to Send and Receive emails at: viewegm11@gmail.com [on Thunderbird].

So the Question arises: Does the warning from Google that tells me That I won't be able to use Gmail anymore apply to my use of the viewegm11@gmail.com address over here on Thunderbird? Or am I safe in choosing to continue using my original Gmail address on Thunderbird...in spite of the warning from Google.

Please let me know your thoughts.

Thank you very much! Martin Vieweg viewegm11@gmail.com

I received a spam message this morning that had a "Disposition-Notification-To" (aka Read Receipt) line that had MY email address on it. I honestly don't know why a spammer would do this - but that's not the issue. I have Read Receipts disabled, but Thunderbird generated an email (to me) and sent it to my mail host. This seems like a bug. Even if the Read Receipt has my email address on it (making it mostly harmless), Thunderbird shouldn't have generated the message. Or am I missing something? Thanks.

I apologize for the mess I made entering duplicate requests. The is the latest UPDATED request on 6/24/2026 at 3:30 PM EDT

I'm using Firefox for Android version 152.0.1 (Build #2016167575) on a Galaxy S24 Plus phone running Android 16.

Firefox is set as the default browser. It always opens whenever a task requires a browser. But when I try to open an HTML file by tapping or long pressing it, the dialog window that opens doesn't show Firefox as an option. Screenshot_#1_20260624.jpg

I have checked the settings in "Apps that can open links", all apps there show "In other app" In "Default apps", Firefox is under "Browser app". Screenshot_#2_20260624.jpg

What do I need to do so Firefox is either the default app for HTML files or at least shows up in the "Dialog window"? Screenshot_#1_20260624.jpg

Thank you!

Needed to ire install thunderbird email and could not get past the "donation" page Paid a "donation" and still cannot get past the donation page The release channel button did nothing Am thinking the donation is a scam How Can I use thunderbird for emails Margaret

There's a particular couple of links in Gmail, from a specific email, which sends links I need to go to, and they will not open, yet gives an error message. This has been happening for years. The sender sends these links to all members, and I'm the only one who cannot open them. 2 decades ago I was able to open them.

The email address box does not accept the email address and comes up with an error message. The only way to send an email is to use a different browser ie Google. Emails are still received as normal on Firefox / BT mail

After Fire Fox does an upgrade for the next 3 to 4 days I cannot connect to web sites that circle just keeps spinning. Sometimes after about 20 to 30 minutes it might connect but then all I get is blank pages. Unfortunately I'm stuck with windows 10 for a while longer. Have tried most of the solutions refreshed 4 times and even reinstalled 3 times but doesn't change anything. Any ideas? Thanks