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Some customized search criteria work as expected, e.g. Content-Type, Message-ID, In-Reply-To, ...

Some not: Content-Transfer-Encoding, Content-Disposition

Some may appear more than once, e.g. Content-Type.

Searching for contents of such criteria / tags yields no results.

How to customize search for these criteria properly?

Below is a shortened source / example addressing all of these issues:

X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 Content-Type: multipart/mixed; boundary="------------3TP0..." Message-ID: <123456789...@example.mail> Date: Mon, 01 Jan 20... 12:00:00... MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: "from@example.mail" <from@example.mail> Subject: =?UTF-8?Q?MusterSubject?= To: "MusterTo" <to@example.mail> References: <...@....eurprd06.prod.outlook.com>

<...@....EURP193.PROD.OUTLOOK.COM>
<...@....EURP193.PROD.OUTLOOK.COM>

Autocrypt: addr=from@example.mail; keydata=

xsDNBGN2t...==

In-Reply-To: <...@....EURP193.PROD.OUTLOOK.COM>

This is a multi-part message in MIME format.

Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit

Dear Sir or Madam ...

Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document; name="=?UTF-8?Q?example=2Edocx?=" Content-Disposition: attachment; filename*0*=UTF-8' '%4...; filename*1*=%7...; filename*2*=%7... Content-Transfer-Encoding: base64

UEsDBBQA...

Related threads/questions/keywords: filter, search, criteria, custom, message, body, header, tags, global

Best I could find: https://support.mozilla.org/en-US/questions/1475007 https://support.mozilla.org/en-US/kb/using-saved-searches https://support.mozilla.org/en-US/kb/getting-started-thunderbird-main-window-supernova

When composing a message, as soon as I hit the space bar a blue border appears around the message pane and instead of inserting a space the cursor jumps to the end of the message. When I try to go back to insert the space where I want it the curser jumps to the end again. So basically I can't insert any spaces in the message. This has only just started happening, been using TBird without any problems for a long time. Any advice would be much appreciated Thanks Geoff

When I compose a text message in TBird to send, it starts a new line after __ characters. I want it to occupy the entire screen width, and set it to show me a larger font. I recall there is a way, but searching has not turned it up. Would appreciate pointers to both settings.

Hi everyone, I use Galaxy Tab S10 Ultra. It is very common for me that I take a screenshot by using smart select function, pin the image and then attach it to the email by dropping the image to the "body" section of the email in Gmail . Is there away to do that on Thunderbird as well?

If not, it would be great to see that feature in Thunderbird with future updates.

I'd be happy with an answer, but I offer a possible solution. Can someone tell me whether it will work?

When more than one copy of an iMap account exists, there is a problem with Junk mail learning. Namely, the learning only occurs on the computer where the user declares mail to be Junk, not on other copies of the same iMap account. It has been suggested that Training.dat be copied from one account to another, but that wipes out any training that has occurred on the copies that receive the new Training.dat file. A merge is needed.

So... Does THIS work? Go to the Junk folder and select all mail in it. Mark all the mail as Junk (seemingly redundantly). Unless Thunderbird makes a special case of NOT learning from marking mail as Junk when it already is, this ought to work, right?

Hello helpful community, Yesterday after first updating my mac ios, I updated Thunderbird (as directed) on my macbook pro and discovered that my local folders are gone. I now have version 128.7.0esr. I have read other conversations here about this problem but they are WAY over my head, and seem to do with PCs. Can you help me restore my local folders with instructions I can hopefully understand? Thank you!

I have TB Mobile for Android Version 8.2 on my Samsung A54 running Android 14. I have done numerous searches, but can not find any way to move an email that I accidentally sent to Trash or Spam back to Inbox (or any other folder for that matter). Am I missing something or is this feature simply not available?

I can do the above with my Yahoo mail on my A54 which has a menu that lets me move any email from folder to folder.

Thanks for any help.

I get the error message shown in the attached screenshot when downloading my emails from outlook.com to a local folder called "DAD". Some messages get filtered, some not. Those that don't get filtered successfully remain in the Inbox, but a message with empty content does appear in the local folder, and cannot be deleted or moved. Re-running the message filters manually will moved the affected messages across, but the "corrupt" message remains in the target folder and cannot be deleted or moved.

The drive that the folders are located on is my data drive, which has c 250gb of unused spaced. WIndows 11, Thunderbird 128.6.1 (64-bit), installed a few days ago when I moved from another machine.

ADDENDUM: Compacting the folder does not help either!

Has no-one come across this recently? - I have come across some old posts, the suggested solutions for which do not apply.

When I send an email in Thunderbird for Android using a Gmail account, Thunderbird leaves no margin on the left. Is this a bug, or how can I change this setting? (I've included a screenshot which is not from Thunderbird but still shows how my sent message appears.)

I get this error message when I try to send an email....this has been going on for days

Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555359.sys.comcast.net resomta-h2p-555359.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available.

Please help me resolve this

I installed TBird app a couple weeks ago and everything was working fine. I didn’t use that computer (Win11) for a couple weeks. When I tried to use email this week, using TBird, I got a message saying: ‘Login to server pop.centurylink.net with username drhart@embarqmail.com failed’ I reset my password and nothing changed in Thunderbird. I deleted the T-Bird app and reinstalled. The email name is showing along with the Inbox and Trash folder, plus the local folders are visible. When I click on the Get Messages icon, I get the same message: ‘Login to server pop.centurylink.net with username drhart@embarqmail.com failed’

I have no problem logging into webmail on the same computer. Also, I have no problem getting email on other devices; Win10 laptop using Outlook, iPhone using Mail, android tablet using native mail app.

Thank you for your attention and assistance.

Hello. How can I change the settings so that emails from the same sender, (same email address), Thunderbird does not classify these as junk and put them in the junk folder?

I followed the article "Switch from POP to IMAP account" successfully. But I am left with two problems: 1. Whenever I try to send an email I get the error message "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) mail.lcn.com timed out. Try again." I have to use webmail or my mobile phone to do so. 2. After I switched, Thunderbird created a new folder for incoming emails with the title of my email address. I already had a default folder using my account name, so I copied all the new emails to that and deleted the new one. I then went to Server Settings and changed the User Name to my Account name, which it was previously. However, my incoming emails now do not appear at all, I can only see them on my phone or webmail. I have checked my settings over & over but I cannot see anything wrong. I would include some screenshots but the print screen button on this temporary keyboard doesn't seem to work properly. (I am in the process of transferring all my work to a new PC running Windows 11.)

Hello

Overnight Thunderbird has developed a major problem. The count for the number of mails in a folder is correct, as best I can tell, but when I open the folder it is either empty or has fewer mails than the count. Based on several tests, repairing sometimes adds more mails, sometimes not, but never the entire folder.

I repaired the inbox and it is now showing several mails that I deleted in the last few days (by emptying the delete folder having previously deleted them). Curiously, they’re all the same type, routine mailings about road works.

I may have backup in that I copy the entire Thunderbird folder to an external drive every morning, including today, and to Google Drive every Wednesday.

Please can you help.

Thank you