Thunderbird Community Forum

I have a message filter that copies every sent item to a local folder when I send it. I want this in addition to the normal sent item placed in the IMAP folder.

This works fine, except that when I reply to an email and the subject is prepended with "Re: ", the copy made in the local folder is not prepended with "Re: ".

Why is this, and how can I make sure the copy in local folders is prepended with "Re: " as it is in the IMAP sent folder?

We have Thunderbird installed on 2 computers and, for the last 3 days, we have been to receive, but not send email. We can log in to our email provider online and send from there with no problem, so it's strictly a Thunderbird issue. We use Graceba/WoW for our email/internet, windows firewall, PC Matic AntiVirus, Windows 11, and Thunderbird version 147.0 (this information is the same for both computers). When we try to send an email with Thunderbird, the following error message pops up: "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.graceba.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again." Our outgoing server settings are correct; nothing has changed and no updates have been done. Something happened over the course of a day 3 days ago (it was fine in the morning and not fine in the afternoon) that caused us to not be able to send email. Please help!

I live in Denmark, and i have send an e-mail to a friend in USA. He told me in the phone that he replied to my e-mail, but i did not receive anything from him. Any ideas on what i can do to receive e-mails from him in the future..? Regards Allan

Hi,

I'm using a google provided email (but it's not gmail) which is provided by my school. When I try to set up my email, everything works fine, Thunderbird detects the settings. When I try to log in I get the error message "Unable to log in at server. Probably wrong configuration, username or password". If I go though the settings the authentication method is "normal password" when it should be "oauth2" but that option is missing. The pop-up to log in to my Google Account to authorize the app does NOT appear no matter what.

I've had this issue multiple times in the past (as I change schools) and I was able to solve it once. In my Windows install I changed some flag in the Config Editor (and I forgot which) and the following time I tried to add the account the Google authentication pop up appeared. Do note that the outlook app (new one and classic) sets up the account just fine without me having to configure or change anything.

So right now I have Thunderbird able to access that account on Windows, but I can't get my install in Nobara (Fedora based) to do so because (I think) the Google authentication pop up doesn't open so that I can go to the account and allow the specific Thunderbird install to use the email.

I've also tried 4 or 5 other email clients available in Flatpost and none are able to trigger the Google pop up thing. I don't think the issue is the OS because I had the same exact issue with thunderbird on Windows until I changed some flag in the Config Editor.

I would appreciate if anyone could help me out, i've spent hours scouring the internet for options and (unfortunately) nothing has worked so far and I've been unable to find the instruction with the flag I need to follow that fixed my issue the other time.

I transferred to a new Apple Mac Book Pro in Nov 2025. Downloaded and Installed thunderbird version 144.0.01. No problems. Did updates and started to encounter issue with sending mail. Last updated version was 147.0. Had to go back to version 144 to get a properly working Thunderbird.

Is there a bug with version 147 for Apple Mac Sequoia that means you cannot send more than one email at a time from pop3 accounts? I send an email, and then have to quit Thunderbird and re-open if I want to send another email. I have done a lot of testing and checking over the last few weeks to try and get Thunderbird to work properly, but nothing worked. Plus a date edit bug / feature for tasks?

I have several accounts, all pop3 apart from 1 Gmail account. No matter which account I start from, if I want to send subsequent emails from a pop3 account, I have to quite Thunderbird. No matter how long I wait to send the email. I tried saving the email as draft, and send later. Does not work. I did not make a note, but I think in my testing I may have been able to send more than one GMAIL email - it is IMAP. I know I did send 1 email from my gmail account, and then tried one of the pop3, but was not successful. At all times fetching mail has not been a problem.

I did all the standard checks which did not make any difference: the server settings; addons disabled; virus checker disabled. Removed an account and re-added; deleted SMTP server settings and re-added. Proxy settings; and so on.

On my old mac running version 128.14 no problems at all. I compared settings. Could not see any differences.

On the new mac, created a new user, and new thunderbird profile. Added 1 pop3 account only. The problem was exactly the same. So it was not a profile issue.

Decided to revert back to older version 144. PLEASE could Mozilla add a facility to Thunderbird to allow you to use existing profile rather than going through the operating system to get it to use my existing profile. I did get the old 144 version to use my 147 profile. After testing yesterday and today it all appears ok. I can send more than email at a time both from the same account, and from different accounts. What I do notice is it does seem to be slow on making the connection on some accounts. Most of the accounts are from the same host but the connection speed for sending is variable across the accounts from the same provider. My email is purely the words testing and testing in the body so not large. Is that to do with the space I have assigned to email mailbox at the provider side?

One other issue with 147, and do not know if it is connected or a new feature of 147 and that is not being able to directly amend dates in tasks? In the newer versions of Thunderbird I found that I can only amend the date of a task by using a popup calendar and choose the date. In version 144 I can now amend the date of tasks by typing in the date field. Is it a feature / setting of 147 or a bug?

I recently updated to 147 and my email is not working efficiently. 1) Thunderbird will not open again after closing 2) Email header populates but message will not 3) All emails are in Inbox but none populate email message.

Help!

For about the past 10 days or so Tbird has been presenting me with a request for my user name and password for, i am assuming, inclusion as an added account. They want

The problem is that in have no idea who caldav is or where they got my link to Tbird. My concern is that this may well be malicious. They want me to authenticate with username and password. What user name and what password?

Does anyone in the forum know what this is all about and how i can get them permanently excluded? With all the fake / criminal challenges on the net these days, i am very nervous (77 years old).

Any help would be really appreciated. Thank you

Have asked this question before and last time it finally work, now nothing works

Have tried so many times to transfer from old laptop to new laptop, nothing works. Have watch the youtube videos and followed this. Can not get it to work.

and what does this mean three levels up to the AppData\Roaming folder

Just want the emails from the old to the new laptop Thank you

Hi, for years I have had subfolders I created under a major folder called Archive [not the Archives folder you have]. The subfolders have names of people or organizations or topics and are in alphabetical order. Until this year, when I created a new subfolder, it automatically sorted to its alphabetical place [or, perhaps I had the option of sorting when I right clicked the major folder]. But for some months, I no longer have that option and have to laboriously drag the folder into its place among hundreds of other subfolders, which I find difficult. (Sorry--I have aged.) I must have missed some new thing I have to do--???

I entered a question about Thunderbird an hour or two ago (Jan 20, 2026). I started to look for a response, but I cannot find my question on the forum.

I entering this post for two reasons:

  1) I want to see if it gets posted and is visible to me
  2) I hope someone can help me find my post that I entered earlier.

So here goes, I am posting this

Jim A.

Good day,

On one of several computers we use to access email when we try to 'Get Messages' Thunderbird doesn't even attempt to connect to the mail server on two of the accounts set up. All four other computers access the servers just fine. In trying to resolve the issue on the recalcitrant computer I created a new email account with the host and added it to Thunderbird using the 'Add Account' wizard, and changed IMAP to POP3. Once the account was created it logged in and received the 'settings' email from the host, and I was able to send an email to another account. I could see the activity reports for the new account in the status bar. However no reports on the status bar for the original two accounts. I've triple checked port settings etc and up until a few days ago Thunderbird worked just fine on this machine. No changes have been made to the original settings. Prior to adding the new account, when asking to get messages the only report on the status bar was 'Done' without any information reported about contacting, downloading etc. The Done message showed up immediately upon clicking the Get Messages button.

Adding the new account and it working properly tells me my settings are correct and the install of Thunderbird is working. Thank you in advance for your suggestions.

John

I can't sign in to my email ([edited] @yahoo.com) on my desktop running Windows 11 Pro. I have changed password which has been confirmed with still no joy. I get the message:-If you still can't sign in try a different device. My wife can sign in on her Android phone but I can't

I can't log in after changing my email password. My email address is anita.bodin@telia.com. I can log in with my new password using Telia Webmail. I have been in contact with Telia and they refer you. Best regards Anita Bodin

Hi, I’m using Thunderbird with a Yahoo Mail account and I’m seeing two Draft folders in the left pane:

Drafts Draft

Their IMAP locations are different: imap://…/Drafts imap://…/Draft

Thunderbird only saves drafts into the Drafts folder (plural). The Draft folder stays empty, but it always shows up.

What I tried so far: • Account settings → Subscribe Unchecked “Draft” there, but it doesn’t save. After reopening Subscribe, it’s checked again and the folder is still visible. • Restarted Thunderbird multiple times. • Server Settings → disabled “Show only subscribed folders”. • Checked folder Properties, but there are no options to hide it or control visibility, so it looks hard locked by Yahoo.

Conclusion so far: Yahoo seems to force both system folders via IMAP and ignores unsubscribe, so Thunderbird can’t hide or remove “Draft”.

Is there any supported way in Thunderbird to permanently hide or ignore the extra Draft folder for Yahoo accounts, or is this a known Yahoo IMAP limitation?

Thanks

hi i went to create a folder in one of my emails which i did, but didnt see i spellet it incorrectly so i tried to rename it but it didnt rename instead it created a new folder with the correct spelling, i tries to delete the wrong one and i couldnt delete it, i moved the emails into the folder with the correct name and it moved into both folders which now doubled the size of the emails i had in the folders or thunderbirds database so i tried to delete the emails in the wrong folder and it delete all the emails in both folders but the folder stills the folders still the emails that where there but i cant see them and i cant compact the folders to save space

Using Thunderbird 140.3.0esr flatpak

Following the [chat faq], I tried to log in with my matrix mozilla.org account following the page instructions. For my @username:mozilla.org account added username in the Username field, mozilla.org in the Server field, then followed the rest of the steps (not entering the password because I'm using mozilla's SSO account, etc).

After finishing the set up wizard, it pops up the mozilla.org page (image below) saying there is an error and there is no further progress is possible. Any suggestions are welcome

My question / subject tells most of the problem. Here it is again in slightly more detail: SPF fail is the part of the undeliverable response to two different emails sent yesterday. What to do? Is down to me or ISP? Is this a Thunderbird problem, or a server level issue? If it is Thunderbird, what action do you suggest?