Форум сообщества Thunderbird

I have a couple of hundred filters and one of them occasionally kicks in and unexpectedly moves certain messages to a new folder but I can't figure out which filter it is. Rather than me going through every filter manually, can't Thunderbird tell me which filter affected a given message? I'd like to be able to right-click a message and be shown the exact filter(s) which affected it.

The other day I received an email from Mozilla suggesting I move from Thunderbird ESR to the Release version (Windows 11). I backed up my profile and installed Release 139.0.2. The following error is now popping up periodically in Thunderbird: "The folder 'Inbox on [myemailaddress]' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again."

I do not think this message is really related to disk space (there's plenty available) or file write privileges since nothing should have changed. I see that others have encountered this message where Thunderbird is trying to compact other folders. However, I did not see a solution applicable to my situation.

Thank you, in advance, for any insight in getting rid of this error.

I changed my Google account password just today. I have used Thunderbird on PC for Gmail without issues for years. I went into Thunderbird Saved Passwords and changed the appropriate line to the new Gmail password. I restarted Thunderbird and tried to send a test e-mail. I kept getting "Login to account Google Mail failed" with a box of 3 options, Retry, Enter New Password or Cancel. When I click on either Retry or Enter New Password, it doesn't give me a chance to enter a password and goes immediately into the same "Login to account Google Mail failed" box with the 3 options. I searched and read the support and one of the option is to remove the line from Saved Passwords and re-create it. I did that and tried to send another test e-mail. Now I'm still not getting a chance to enter a new password. I keep getting the box with the 3 options which doesn't allow me to enter a new password. There isn't a new entry in the Saved Passwords.

Strange thing is Thunderbird is receiving new e-mails fine. I'm just not able to send.

Thanks.

15.18.0 how to export to mobile from settings in the desktop thunderbird so i can use my android phone--if it will help, on my desktop there is no Export to mobile in settings!!!!!!!

Will Thunderbird Release make it any easier to migrate Thunderbird from Win10 to Linux (Ubuntu or Mint)... With 200 million PCs becoming obsolete in a few months, I would think Mozilla would have noted that many of us are going to migrate to Linux but moving Thunderbird has been a nightmare (still unsuccessful nightmare). I've followed all the directives and none seem to work... I've been using TBird since it started and have a LOT of emails I'd prefer not to lose so if I could just get my Windows profile to work on Linux it would be great... I know you're busy, but we are facing an Armageddon of sorts out here... Help! Thanks a million cheers pj

By mistake i set up Thunderbird to delete emails from my bigpond.com account, once downloaded.

Therefore Thunderbird contains all my old emails.

I want to restore the old emails to my bigpond.com account.

is there a way to export emails from Thunderbird?

Thank you for your help.

I have combined thunderbird and gmail, and it works different at my 2 pc.s, but that is ok.

But my original thunderbird relays on yousee and the adress from yousee.

What if I skip yousee?:

Can i still keep the email address from yousee to continue this combination?

I want to keep it, (the adress) if possibly, but not yousee??

This is the question ?

--,

Other words, not questions:

I must say: The configuration and the userfriendly way Thunderbird runs at pc is the very best - also the way You can mail to a group and answer between each other and all ( not easy in gmail)+ the way you can make maps= The worlds best.

But there are too many problems with yousee at the mobile, therefore I am thinking about shipping it.

( I also have Thunderbird at my mobile, but some new spams here, which does not shows up in Gmail or Thunderbird ...at pc.s) --- Best from Denmark/ Kib

Updated from 138.xx to 139.02 today.

Archiving from either of my two feed (RSS) accounts doesn't work right. I click archive button, instead copies to the archive folder of first email account in list.

Used troubleshooting mode to disable addons, still happens. Saw nothing in changelog to explain this.

A bug?

Since 5.18.2025 I get a "no message found" in my sent folders and other folders. "Find" will still find the messages and they can be opened, but I can't get the email folders to display. I know they are still there. Version 128.10.2esr. How can I get them to display in the folders?

Can I use Thunderbird to build an incremental local backup/archive of all messages transiting (incoming/outgoing) a webmail account ?

Any idea how to achieve this ?

My problem is:

• A POP3 account will miss all folders except the Inbox. (It's a pity that POP4 has not gained traction yet.)
• An IMAP account creates a mirror, not a backup. Remote deletions in the webmail account must not delete messages from my backup and vice versa.

detailed requirements:

• one-way sync only, since a local backup/archive must be built, not a mirror (two-way synchronization):
• Remote deletions must not cause local deletions (otherwise it would be a mirror, not an archive/backup).
• Local move/delete operations must not be reflected back to the mail server.
• Read‐only access to the mail server: no moves, deletes or flags remotely.
• All messages in all folders must be included in the backup: Inbox, Sent, custom folders, etc. Since POP3 can only back up the Inbox, I will probably have to settle for IMAP to include all folders.
• No duplicates: Messages must not be stored locally more than once.
• Messages must be stored as full offline copies locally (not just headers).

I am trying to get my existing email to my new laptop. I did contact Spectrum and all the settings are correct. Thunderbird has asked me to change my password. It just keeps saying that my sign on will not work. I am using Windows 11.

I am running Thunderbird ESR 128 as a snap on Ubuntu 24.04. I have several different email accounts and until a couple of days ago, when I replied to an email on account 2 or 3 it was sent as from that particular account. Now it is being sent as if from account 1. Trying to send an email as if from account 2 or 3 results in a failed-to- send message. I have noticed that when I look at the from field for accounts nos 2 and three the following is being inserted before the normal email address "NSIMsgidentity: 1d6 (or 1d7). Can anyone please advise me why this is happening and how to recover the ability to reply / send an email from accounts 2 an 3 as if from those accounts rather than from account 1? Thanks in advance

Hi,

When I switch from the Calendar tab to any other tab (Inbox, Address Book, Tasks, etc.) and then return to Calendar, the calendar always jumps back to 12:00 AM in the daily and weekly views. Previously, it would remember the correct time range I was viewing.

For example, if I’m looking at 8:00 AM–6:00 PM time period in the calendar and switch to another tab, returning to Calendar resets the view to start at 12:00 AM. I then have to scroll down every time to get back to my usual working hours.

Please restore the previous behavior where the calendar maintains its last scrolled/viewed time range.

Thanks!

I have two issues that are related to a buggy interaction between Thunderbird and Microsoft's email server.

Issue (1) When I send an email with my Outlook email address (from the Android app or from outlook.live.com, but not Thunderbird), my email address shows up as a jumbled mess in the sent folder on Thunderbird.

It appears to the effect of

IMCEAEX-_O=FIRST+20ORGANIZATION_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+XXXXXXXXXXXXXXXXX+29_CN=RECIPIENTS_CN=XXXXXXXXXXXXXXXX@sct-XX-XX-XXXX-X-msonline-outlook-6f06c.templateTenant

(I have masked some potentially sensitive information).

In the sent folder on my Outlook Android app, my email address looks normal. It also looks fine on a browser in outlook.live.com. However, it's in the sent folder on Thunderbird that my email address is a mess.

Issue (2) When my Outlook email address is involved, the sending and receiving email addresses in the "correspondent" field are swapped in Thunderbird.

There are a couple situations where this swap happens:

1. Sending an email with my Outlook email account (either through the Android app or outlook.live.com, but not Thunderbird). In my Outlook sent folder on Thunderbird, the "correspondent" field shows my jumbled email address and not the receiving address, such as bob@gmail.com. Likewise, In the inbox of the receiving email account (such as bob@gmail.com) on Thunderbird, the "correspondent" field shows bob@gmail.com and not my Outlook email address.
2. Sending an email with any other account in Thunderbird to my Outlook email address. In my Outlook inbox on Thunderbird, the "correspondent" field shows my Outlook email address (this time unjumbled) and not the sending email address. However, in the sent folder of the sending email account in Thunderbird, the "correspondent" field shows up correctly (i.e., my Outlook email address).

These two issues are perplexing and probably related. Thank you for any help!

Dear Support Team,

I'd like to understand the design of S/MIME signature / certificate validation in Thunderbird. Lets's assume the scenarion that a message with valid signature has been received but the certificate expires very soon (next couple of days).

In my opinion, the behaviour of Thunderbird might be a bit missleading. As enclosed, S/MIME information says that certificate is untrusted, which is not really accurate. The certificate was trusted when the message has been received but now expired.

I assume that Thunderbird validates certificate only against current date. But we have the message original date in the headers. Validation process could be configurable, like in popular pdf readers (which date to use for validation), or even better it could execute 2 validations in case current date validation has not been scuccessfull and S/MIME information could cover this scenario that the signature has been valid while message been created / recived but the certificate expired. It would definitely reflect real scenario in more accurate manner.

I'd appreciate if you could let me know if there is a configuration possibility which I'm not aware of. In case it is not available, can you please advise how I could submit a proposal of functionality enhancement? In case, there are rules comming from RFC standards restricting the validation of signature in a way that has been described, I'd also appreciate this feedback.

In spite of the above remarks, I think that you did a vary good job with S/MIME functionality in thunderbird. It is far more user friendly and well presented to a user than in other email clients.

Best regards, Marcin

After the last update to Thunderbird 139.0.2 on a windows 10 computer, the write button doesn't work. When I click it nothing happens. I receive messages and can even reply to messages I just can't write new messages. The error console shows an error: 1750426957343 addons.xpi WARN Checking C:\Program Files (x86)\Mozilla Thunderbird\distribution\extensions for addons UnknownCollectionError: Unknown Collection "thunderbird/moz-essential-domain-fallbacks"

   UnknownCollectionError resource://services-settings/RemoteSettingsClient.sys.mjs:189
   sync resource://services-settings/RemoteSettingsClient.sys.mjs:635

EssentialDomainsRemoteSettings.sys.mjs:110:15 UnknownCollectionError: Unknown Collection "thunderbird/url-parser-default-unknown-schemes-interventions"

   UnknownCollectionError resource://services-settings/RemoteSettingsClient.sys.mjs:189
   sync resource://services-settings/RemoteSettingsClient.sys.mjs:635

SimpleURIUnknownSchemesRemoteObserver.sys.mjs:114:15

I think I have turned add-ons off and still have the problem.

I have about six email accounts on my Thunderbird. One is associated with my internet provider. The rest are related to my website server. All of the accounts. except one, are working fine. The one that isn't working somehow lost its password. Its an account related to my website. For a while I could get incoming mail but I couldn't reply. I changed the password at my web host, and now I can't receive or send.

What do I need to do to restore this mailbox's functionality?

Many thanks for your suggestions

Добрый день. Нужна срочно Ваша помощь. К нам пришло сообщение от почтового сервера mail.ru Что нас заблокируют с 24/06/2025 числа. Мне поддержка написала, чтобы скачать с облака почту на компьютер нужно установить почтовую программу и перечислили их в качестве примера. Я установил на свой комп Thunderbird. Создал локальную папку на компе у себя. И запустил программу, чтобы прогрузились все письма с сервера. Оставил на сутки. Потом выделил в папке входящие все письма и нажал кнопку архивировать в локальную папку. Тоже самое сделал с отправленными. В итоге сейчас на сайте начали пропадать исходящие письма и входящие. Входящие резко пропали за 25 год до 20 Хотя я ничего еще не удалял. Думал прогружу почту всю с 18 года в локальную папку на комп. Скопирую ее Архив еще раз отдельно и удалю только с облака до 21 года, чтобы освободить место в облаке. Но тут происходят чудеса. Помогите пожалуйста. Как все восстановить и сделать правильно. Готов предоставить доступ через Ани деск