Thunderbird Community Forum

Hi,

I have experienced a worrying problem since a few days on Thunderbird client (Windows).

I recently received anonymous emails on my ISP mailbox. The sender has been disguised with display name of some of my recent recipients, but the sender is not visible when I open the message. The mail subject is also taken up from these recent emails. Each of these emails contains one of my personal family photos! These suspicious messages are only visible on Thunderbird 128.2.0esr (64 bits) Windows and not on web mail in a browser nor on the mail client of my smartphone!

Inspection of the message source in Thunderbird does not show the email header... but only the binary code of the image that has been included as an attachment.

It appears these incoming messages were modified locally in Thunderbird because I can see the original and valid emails from the senders in a web browser or from my smartphone. I suspect a malware is corrupting some inbox messages in Thunderbird. Norton did not detect any malware on my PC. Malwarebytes has quarantined a few PUPs/MUPs.

Only one of my mailboxes is affected by this problem. Is there any known vulnerability in Thunderbird similar to this report? How can I block this kind of alteration of incoming mail?

support.mozilla.org/en-US/questions/1391768

"cannot truely say those downloaded emails are an independent copy because... display whatever is held on server"

Seems to say that TB displays [a message that had been downloaded] not by reading it from folder in computer, instead by reading it from sever. If something different is meant, then please clarify.

Hello,

       About 5 months ago I had this same issue and paid a person $90.00 to fix this issue

and erything was working gin until just recently, I have this issue all over again! I cannot afford to keep paying people to fix this all the time is this issue keeps popping up! Now I cannot received or send any outgoing mail!! THE MESSAGE SAYS:

SEND MESSAGE ERROR, SENDING OF THE MESSAGE FAILED THE MESSAGE COULD NOT BE SENT BECAUSE THE CONNECTING TO THE OUTGOING SERVER (SMPT) stmp.mail.yahoo.com failed. THE SERVER MAY BE UNAVAILABLE OR IS REFUSING SMPT CONNECTING. PLEASE VERIFY THAT YOUR OUTGOING SERVER (SMPT) SETTINGSD ARE CORRECT AND TRY AGAIN

I'M LOST, I'M NOT THAT TECHMICAL AND NEED HELP!

Hello, I still have not gotten my answer on how to fix my outgoing emails with Thunderbird, I do not know how to configure it, I have tried many times watching YouTube vidoes, and nothing works!

I need over the telephone assistance or I will have to pay again to get it fixed, and now it has happened all over again. Also, there is a so-called Mozilla Thunderbird customer service phone number, which I do not know whether it is legitimate or a fraudulent phone number, it is (817) 406-3036. As far as I know there is no customer service number on your site, so this make me wary.

                                                               Thank You,
                                                                D.S.
                                                                willowby4@yahoo.com

HELLO,

          SORRY FOR THE CAPS, IM JUST FRUSTRATED!! I PAID A COMPUTER TECH

$90.00 ABOUT 6 MONTHS AGO TO FIX AND OUTGOING MAIL ISSUE, AND HE FIXED THE ISSUED, NOW IT HAS STARTED ALL OVER AGAIN! I HAVE LOOKED AT MANY YOUTUBE VIDEOS AND STILL AHVE NOT SOLVED THE SMTP ISSUE! THIS IS WHAT THE MESSAGE BOX SAYS: SMPT SERVER

         DESCRIPTION SERVER NAME
         PORT 587-DEFAULT 587
         SECURITY AND AUTHENTIFICATION
         CONNECTING SECURITY THIS IS WHAT I PUT STARTTLS
         AUTHENTIFICATION METHOD: NORMAL PASSWORD
         USER NAME I PUT MY EMAIL ADDRESS willowby4@yahoo.com

I TRYING TO FIND OUT SPECIFICALLY WHAT I'M SUPPOSED TO PUT INTHAT BOX!! I WOULD APPRECITATE A RESPONSE PLEASE!

                                                                        THANK YOU FOR YOUR TIME,
                                                                         Deborah H. Sigel
                                                                         willowby4@yahoo.com

ello,

       About 5 months ago I had this same issue and paid a person $90.00 to fix this issue

and erything was working gin until just recently, I have this issue all over again! I cannot afford to keep paying people to fix this all the time is this issue keeps popping up! Now I cannot received or send any outgoing mail!! THE MESSAGE SAYS: SEND MESSAGE ERROR, SENDING OF THE MESSAGE FAILED THE MESSAGE COULD NOT BE SENT BECAUSE THE CONNECTING TO THE OUTGOING SERVER (SMPT) stmp.mail.yahoo.com failed. THE SERVER MAY BE UNAVAILABLE OR IS REFUSING SMPT CONNECTING. PLEASE VERIFY THAT YOUR OUTGOING SERVER (SMPT) SETTINGSD ARE CORRECT AND TRY AGAIN> I'M LOST, I'M NOT THAT TECHMICAL AND NEED HELP! FORGOT TO ADD ME EMAIL FOR WHAT TO DO! willowby4@yahoo.com

Hi. I have created 2 subfolders in "Drafts", which ALSO turned into draft folders:

• The folder icons switched from the standard folder icon to the "Drafts" icon.
• The right-click context menu is reduced (just like for other special folders), e.g. the "delete" command is missing.

So how can I delete this misbehaving folder now ?

I doublechecked in my account manager and via config editor that the subfolder are NOT used as DRAFTS folder for any of my (POP3) accounts.

Thank you so much.

so I am working through downloading python and chromedriver and dealing with PATH issues re: selenium, pip, etc when I start getting first an email error message:

Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window.

I do not have thunderbird open. i confirm in task manager. don't think anything of it. then firefox starts doing the same thing.

at this point, I am already uninstalling the other software above to try a new, clean install and I am required to restart.

after restart, weird stuff. half my desktop icons and explore files are now faded. neither TB or FF will work. I use chrome, see a bunch of the messages on here to first look at uninstalling and reinstall. Do it. Doesn't work. Next step - run down through appdata, roaming, etc to get to the profiles folders and delete the "profile.lock" file

Yes. This works for FF but WTH!!! I open TB and every email is gone. I go thru the process to zip my profile and import. Nope. Doesn't work. So i unzip the file into a thumbdrive and import using eml method.

TB does not keep my original format, duplicates all folders, and anything older than early 2023 is there but there is no longer a subject, sender, etc

I take a break. Today I am back at it. I cannot access new emails at all. I cannot delete the folders so I make a backup folder, uninstall and reinstall TB and the same thing.

How can I reset TB, import the old emails?

What is the importance if anything of profile.lock?

Any thoughts if working through issues on python, etc caused this?

Hi. Same question as in https://support.mozilla.org/en-US/questions/1226211  : How can I customize the TB's main menu ?

I would like to remove menu items, which I never use:

• for simplicity
• to avoid accidental deletion (e.g. "delete folder", "delete message", "delete mail marked as junk in folder", etc.)

many thanks!

It used to be when I moved from just my laptop to my much larger monitor the layout pane sizes adjusted proportionately. Now for some reason the message pane remains at whatever it was on the last device. Is there a way to change that?

What do I need to do to make my hotmail.com accounts comply with Modern Authentication requirements before September 16/2024 to maintain email access?

I have 4 email account using Thunderbird. These are all domain imap email accounts. They work via the web hosting mail (Yahoo/Turbify). I can access many different ways: Outlook on my iPhone and iPads, Thunderbird on my desktop Mac Pro. There was some sort of tech issue at Turbify where all 4 account are hosted but all email was restored and password were reset.

However, only one account jeff@jeffmunk.com no longer work on Thunderbird, perhaps the most import one. I checked both the imap settings and smtp setting and the authentication and recommended ports and I still can't get that one account to work - but only on Thunderbird. It works retrieving from mail from Yahoo and Outlook, both phone apps or a browser on the desktop. I think I has this issue once before.

All of sudden, clicking a email link on a webpage in any browser on my computer doesn't open Thunderbird, in fact, nothing happens. Thunderbird is set in Windows as my default email program. If I change the default email program to something different, then clicking on a email link in a webpage works. Switching back to Thunderbird as the default email program doesn't work either.

I am using the following operating system:

Edition Windows 10 Pro Version 22H2 Installed on ‎6/‎12/‎2021 OS build 19045.4780 Experience Windows Feature Experience Pack 1000.19060.1000.0

The following version of Thunderbird:

128.1.1esr (64-bit) Release notes Thunderbird Windows MSIX packagethunderbird-MSIX - 1.0

My main browsers are Chrome Chrome is up to date Version 128.0.6613.120 (Official Build) (64-bit) and Firefox 130.0 (64-bit).

Can someone help me fix this problem?

Thank you.

My Thunderbird stopped downloading new email messages on August 22 (but is still able to send). Microsoft says that Thunderbird is not comptatible with Windows 10, but it worked fine before the update. Is there now a compatibility issue?

TB 128.2.0esr (64b) Setting a decent Date/Time format should be easy, it's not. This is what I tried - https://support.mozilla.org/en-US/kb/customize-date-time-formats-thunderbird I added these formats to Config - intl.date_time.pattern_override.connector_short = {1} {0} intl.date_time.pattern_override.date_short intl.date_time.pattern_override.time_short They had no effect, see screenshot for before and after. 08:42 for today's time and date = good. 9/3/2024, 09:11 the comma is unnecessary, I want it gone, otherwise good. Monday, September 2, 2024, 17:12 after 7 days ultra verbose? Am I missing something?

All of our "read" emails, --from all of our accounts -- have suddenly disappeared. All of the folders and subfolders are still present. We still get new email, but as soon as we read it, it's gone. We have had these same email accounts for years and have not made any changes. In Account Settings --> Synchronization & Storage --> "don't delete any messages" is checked. "Read" messages are still on our server.

So, 1) Why did this happen? 2) Is there any way we can get our messages back in Thunderbird?

Is there some way that I can nullify the format changes in the v128.x message list, compared to v115.x, so that my UserChrome.css tweaks that are functioning well in v115.x are not broken? Perhaps there are some new Config flags that might be set? I hate to have to redo a bunch of carefully calibrated work.

Sample of v115.15.0 message list included; I uninstalled v128, so I can't easily show a sample of that.