Thunderbird Support Forum

MANY Years of experience in this Industry has taught me that the Most "UNSTABLE" types of Files, across Numerous Different Manufacturers and Products are Email Files. Trying to Migrate (Often IMPORTANT) emails from one system to another as the Computer Industry advances too fast for its own good, OFTEN results in the LOSS of Data, and Duplicating the Contents of emails in different File Types, before Migrating, Compacting, or whatever, takes FAR TOO LONG. So I've learnt to LEAVE The Files ALONE and Try to keep Duplicates, when time permits. I'm a New User of Thunderbird (because my previous Microsoft Product was "losing" files) and today, for the First Time I was ask to allow Thunderbird to COMPACT its files. I worry that this will make the Files HARDER / SLOWER to Access, MORE LIKELY to be LOST, and LESS EASY to Migrate at some time in the future. My Computer has TONS of Unused Space, so I have no Personal Need to Recover the 230MB Thunderbird is telling me it will Free Up.

What is your recomendation - based Primarly on the RELIABILITY and SECURITY of my Data.

Hi, recently I have been struggling with this "fetch failed" error. Whenever I enter Thunderbird program I receive this notification, I probably don't receive all mails sent to me. Please let me know what can I do with problem "MARKER:c6oc..." (the rest is everytime different), I was supposed to recieve this week very important to me mail.

I got the PIN reset and when I boot windows it refuses to load giving me message we cannot load your account I removed hard drive got adaptor and can get my files on other puter I want to recover my thunderbird emails and attachments

can you tell me what folders to remove to new computer and how to recover them?

thanks

Hi. Thanks in advance. I have 5 gmail accounts coming in to Thunderbird, and suddenly, 2 of them will not send emails. The other 3 are fine. I have been through the suggested helps on the webpage. Any ideas? Jan

It isn't a question I'm afraid, but an observation. I am getting ready to finally leave thunderbird behind.

I've been with TB since windows stopped their IE many years ago. The first few years were good - hence small donations now & then.

I'm now a disabled pensioner & need to rely on my electronic items. Also, I can't keep up with TB constant stoppage of accounts "New passord needed" etc, which, when we could get contact with them, was told "taint us mate,,, must be the Microsoft", but upon checking, there was never, ever a problem with MS. It's got to the point where I can't get access to half of my accounts, or can get access to some, but not send,,,, or receive messages,,,, etc etc.

Now I can't get contact with them for help. I would have thought, someone in this business would have a direct email address where we can ask specific questions.

If I can't get help to use your product, it's a shame & I'm seeking an alternative.

Hi I've changed ISP from virgin to NOW broadband all was ok but now I am receiving emails but can not send any I've checked rechecked and checked again the settings with GMX settings and everything is as it should but it won't allow any emails to be sent.

Any suggestions please?

SMTP server need multiple user logon due IONOS security change (emails must logon using email domain), I have several domains. IONOS on 29/01/2024 require emails sent via SMTP to be from the domain of the email. eg 111.com, 222.com & 333.com I have three domains with ionos so I need to be able to logon using three different users. eg fred@111.com, bert@222.com & jim@333.com all to SMTP.ionos.co.uk BUT Thunderbird appears to only allow ONE USER for each SMTP server. Attempting to change user changes ALL instances of logon to smtp.ionos.com. "Action Required: Update Your Email Settings By 28.01.2024

Dear XXXXXXX,

This is a reminder of our email from November 2023.

We are making the following changes on our email servers starting on 29.01.2024, to increase security for our customers: • • It will only be possible to send emails through our servers if the sender address has the same domain as the corresponding mailbox.

You can find more detailed information on the actions you need to take in our Help Centre.

If you have already made these changes for the affected mailboxes, you do not need to do anything else.

What does this mean for you?

For these mailboxes, you will need to necessary to adjust the settings of your email program or the software that sends the emails by 28.01.2024:

aaa@yyy.org.uk [this is the default user]

You can find detailed information and a step-by-step guide on how you can make these changes in our Help Centre.

Please make sure that the domain of the sender address and the authentication address in the outgoing mail server (SMTP) settings of the software you are using match by 28.01.2024, at the latest.

If that is not the case, affected emails will no longer be delivered from 29.01.2024, displaying an error message “Sender address is not allowed” and they won't be sent.

Please be aware that this rule applies to all platforms, including mobile email apps, Outlook, other desktop email clients, personal email servers, and any applications that use our SMTP service for sending emails.

If necessary, please forward this email to the users of the mailboxes or the person responsible for your email administration.

Best regards,

IONOS Customer Service"

When I first start Thunderbird it works fine, for a while (as in possibly days). Then I notice when I try to send an email it just spins its wheels. When I shit it down then restart I get a poo-up saying Thunderbird is already running but not responding. Checking task manager I see two instances of Thunderbrd.exe in the liist. In order to successfully restart it I must first kill all instances (I use Sysinternals pskill.exe for this). Then when it restarts it typically downloads a messages that were previously blocked.

I've seen this behaviour even without firt trying a send. If I am expecting an email that isn't appearing (there is no indication of a problem when I try a demand fetch) I know that I'll have to do the same pskill/restart to fix it.

I'm running Thunderbird 115.8.1 (64-bit) on Windows 11 Home (currently up to date).

I have folders and subfolders set up to keep emails organized. Here lately if I set up a folder or subfolder and move a read email to that folder, later the folder shows up as "Light grey" and the contents are gone. I don't have a clue what is happening.

Today, October 9, 2022 I clicked on an update for Thunderbird. Now I can't find it anywhere on my computer. It says all shortcuts no longer refer to the account or whatever term they use. Its gone, nothing. I've lost all my emails, everything. Anyway to get anything back?

115.5.1. It has been months now since the redesign and this is still so buggy I encounter bugs constantly. Most critical is if I highlight something and try to drag it to a new location it gets deleted. No undo function available. What was highlighted is just gone permanently. I try to remember to instead copy and paste then delete from the former location but I keep forgetting and lose everything. Entire paragraphs I wanted to relocate. If I do try to copy and paste it doesn't paste on the first attempt. It pastes the second time.

At this point I think I have to switch to Webmail for sending out an email. I just can't deal with broken Thunderbird any more.

Hi A persistent issue: Mozilla Support did try to help, they think it is an issue between Thunderbird and username bbbb@xyz.net - whick is via ACS, our email provider Login to server mail.acsalaska.net with username bbbb@xyz.net failed. - keeps coming back Might someone have input on how to go about correcting this? Thanks

Thanks to anyone who can help.

Recently, a weird problem developed on my Thunderbird. I can delete maybe 7 or 8 emails, and suddenly nothing else will delete. I can press the delete button and nothing happens. The only resolution is closing Thunderbird and reopening.

I have followed these steps: https://support.mozilla.org/en-US/kb/cannot-delete-messages#:~:text=Close%20Thunderbird.,Select%20the%20Trash%20and%20Trash.

And it did not resolve the problem.

Any other ideas?

This issue was discussed at https://support.mozilla.org/en-US/questions/1328332 which has been archived. The chosen solution was “try expanding the address book in the left pane and clicking on the actual list in there... as that is what is displayed in the status bar, the contact selecting in the pane on the left.” In my case this does not work. Even though the Status Bar is active, it shows nothing except that I am currently online. I am running TB 102.1.0.

Have used Thunderbird for years, decades even, on multiple PC's, family and friends, and home PC's. Even donated a few times over those years but this one has me stumped and honestly a bit miffed.

I got 102 update and it completely broke my 2 POP and 1 IMAP accounts. New Passwords, cleared files, all the business you find here and online. Saw someone revert back to v91 which I had prior. Did that, worked like a charm and the prior existing accounts that did NOT work; started working again instantly. Proves I had the right accounts/passwords.

Next day, launch TB and it's updated again to 102; hmm. Downgrade again a second time on 2 PC's and go my business. It's now been 4 days and I've put registry keys in, used Config Editor and did all the "do not auto update" things I've read and still, today after a long and wicked day; I find starting TB it's yet again auto updated to 102.

Help please? I'm an IT guy of over 30 years and this one has me stumped and doing side-eye and I don't like it. Is there an honest and true way to NOT UPDATE to 102? Sorry, upset and have never had an issue *ever* with TB these years but this one is quite annoying downgrading daily.

Thank you Ictinike (off to downgrade a 5th time)