pertes des dossiers archivage
Bonjour mes dossiers archivage n'apparaissent pas dans thunderbird alors qu'ils sont bien présent dans le dossier folders pourquoi
Bonjour mes dossiers archivage n'apparaissent pas dans thunderbird alors qu'ils sont bien présent dans le dossier folders pourquoi
I have an e-mail in my TB in-box. The mail contains a hyperlink to Facebook. When I click on the hyperlink, I get the message copied above in the Subject of this proble… (read more)
I have an e-mail in my TB in-box. The mail contains a hyperlink to Facebook. When I click on the hyperlink, I get the message copied above in the Subject of this problem. In almost all cases, if I re-click on the icon in the e-mail, the re-click takes me to the desired URL in Firefox. My Thunderbird is 128.11.1esr (64-bit). Why is the first click producing the error message? Would there be anything in the TB Error Console?
Hi: I need to import my data shown here: C:\Users\DonB\AppData\Roaming\Betterbird\t70e12zz.default\Mail\pop-mail.outlook.com so I see all my email and its folder structur… (read more)
Hi: I need to import my data shown here: C:\Users\DonB\AppData\Roaming\Betterbird\t70e12zz.default\Mail\pop-mail.outlook.com so I see all my email and its folder structure.
I think Outlook.com became: outlook365.com?
Where do I change this stuff so it works?
My Profile archive: https://1drv.ms/u/c/f1c69e25e0d2390a/EYrCbhynjyhGptVQ-P5ZWGUBDJFeXZno-JwoGDWXauj_9Q?e=gK0kOL
Thanks, mozillafan
how to limit export to just addresses
The last few days most of my emails have been tagged as ***SPAM*** and automatically moved to my Junk folder. I have to be sure to check that folder. I've tried "training… (read more)
The last few days most of my emails have been tagged as ***SPAM*** and automatically moved to my Junk folder. I have to be sure to check that folder. I've tried "training the app by moving valid email to the inbox but the problem persists.
Trying to figure it out myself givr up. tracked to server settings not configured right? SMTP got this message a little while back,,,sending of the message failed. Una… (read more)
Trying to figure it out myself givr up. tracked to server settings not configured right? SMTP got this message a little while back,,,sending of the message failed. Unable to aiuthenticatrto outgoingserver(SMTP.COMCAST.NET. Please chech the passwordand verify. (don't know exactly how to do that) the authentication method in account settings/ out goingserver SMTP. 07/10/25 I have so many thingas messed up in there. I'm 79 and losing to this new technology
how much would it cost me for you wonderful people to fix it for me? can you do that?
Thanks for any information you can give me.
Linda Beck
PS I LOVE forefox and Thunderbird. It was always easy but nowl.....
Hi, I have been using Thunderbird for many years. I have not made any changes to the standard Windows 10 version. Suddenly, when I want to open a New Message, the button… (read more)
Hi, I have been using Thunderbird for many years. I have not made any changes to the standard Windows 10 version.
Suddenly, when I want to open a New Message, the button is highlighted in blue but nothing happens when I click on it.
I stopped getting emails and could not send. So, I clicked on repaired inbox and all my inbix messages dissapeared.
I try to access my messages from an outlook.com account with Thunderbird mac. I get the error message "the STAT command did not succeed". This happened suddenly today wit… (read more)
I try to access my messages from an outlook.com account with Thunderbird mac. I get the error message "the STAT command did not succeed". This happened suddenly today without changing any parameter. POP is enabled on this account. Moreover on another mac with Thunderbird everything is correct with the same account. Cookies are enabled I tried changing OAuth2 to normal and changing back. No sucess. What could I try next? Thanks.
I have been trying to move emails from a computer to a new one. Nothing works. It tells me to create a zip file since the profile is over 2GB. If it does create one (it u… (read more)
I have been trying to move emails from a computer to a new one. Nothing works. It tells me to create a zip file since the profile is over 2GB. If it does create one (it usually fails) then when I try to open it with an unzip program it does not appear. I did some snooping and the unzip program says it's empty. Explorer says it's over 4GB. The Windows app says it's an invalid zip file. Obviously TB can't create a valid zip file.
I've tried using just the mail folder because everything else (address book, etc) is not that important. It fails.
I do have the same version of Thunderbird, but the existing computer has the 32 bit version. The new one has 64 bit. Is that the problem?
A couple of months ago TB downloaded an update. The wrong update. I spent hours on it and in a chat for another hour or so. They had me going to different sites and downloading a number of versions. None worked. They gave up. I was told that what I was seeing should never happen. Well it did and they couldn't fix it. I finally dug around in my server and found a few old downloaded versions. One of them finally fixed it.
So, yeah, I've pretty much had it with Thunderbird. If I can't get this resolved quickly (He says after - 6 hours) there is no reason to keep fighting with it.
I found a thread on the TB community forums that said to great a new profile so I did. Now the old PC is screwed. I started another profile import. It's been running for 15 minutes. It is stuck on file 231 and has been for 5 minutes.
If anyone can figure out what to do I'm listening.
Hello, I have recently been unable to create new messages in Thunderbird. I am currently on the latest version, 139.0.2 (64-bit). There is no Create New Message Button, a… (read more)
Hello, I have recently been unable to create new messages in Thunderbird. I am currently on the latest version, 139.0.2 (64-bit). There is no Create New Message Button, and Control + N does work either. I am also now getting a lot of extra information in the Header Pane. Refer to the Screen Shot JPG. Thanks, Graeme
After updating to Thunderbird version 140.0esr, I am unable to create a new email. Clicking “Write” or “New Mail” does nothing – no compose window opens. However: • Rece… (read more)
After updating to Thunderbird version 140.0esr, I am unable to create a new email. Clicking “Write” or “New Mail” does nothing – no compose window opens. However: • Receiving and replying to emails works normally • Safe Mode does not resolve the issue • Disabling all add-ons has no effect • Reinstalling Thunderbird did not help • I confirmed I am using version 140.0esr
No matter what I do, Thunderbird refuses to push my imap email. I keep missing several important emails. Outlook, Spark both work fine but I hate the ads. Please help me … (read more)
No matter what I do, Thunderbird refuses to push my imap email. I keep missing several important emails. Outlook, Spark both work fine but I hate the ads. Please help me figure out what's wrong. This makes the client unusable.
While composing new message window and opening the attached pdf file to check whether right file attached (from email composing window) an error occurs pdf could not be o… (read more)
While composing new message window and opening the attached pdf file to check whether right file attached (from email composing window) an error occurs pdf could not be opened, because the associated helper application does not exist. Change the association in your preferences, but, I can open the pdf files (same email or other drafted emails) from "draft folder, after sending and accessing it from Sent folder and even from Inbox folder " which have pdf file attachment, in the system adobe reader. But when I change in default program settings to - "view in Thunderbird" it opens in Thunderbird (opening from composing window too), but I need to view in adobe reader. Using Thunderbird 115.18.0 (64 bit) Supernova in Windows 7 - 64 bit. Any ideas or solution anyone have?
What has happened to the Tools Tab on the header task bar? I can no longer delete tagged emails on mass.
I’m running Thunderbird 128.6.0esr (64-bit). I’m trying to export my address book in csv format. I tried to follow these instructions: Start Thunderbird In Address Books … (read more)
I’m running Thunderbird 128.6.0esr (64-bit). I’m trying to export my address book in csv format. I tried to follow these instructions: Start Thunderbird In Address Books Select address book (not 'All Address Books' as it is a virtual search and not a true address book) Tools > Export Choose where to save Save as either: Comma Separated *csv files OR LDIF Click on 'SAve' However, I not finding the option to save as *.csv file. I get abook.sqlite file, but I can’t open file. What app do I use to open file so I can get a *csv file to I can export to use in Outlook. Thanks, John
Been this way for quite a while now. Deleted messages do not show up in trash in 1 gmail account. Properties of the trash folder indicate that it contains 124 meg. In … (read more)
Been this way for quite a while now. Deleted messages do not show up in trash in 1 gmail account. Properties of the trash folder indicate that it contains 124 meg. In a different gmail account all is normal. Properties indicate the same in both gmail accounts. Asside from maybe deleteing/reinstalling the account, how can this be fixed?
'by carbon copy' doesn't work on my mails?
Microsoft Outlook Client emails are legally valid in a court of law, but Thunderbird emails are not. Can we start taking baby steps towards making Thunderbird emails a l… (read more)
Microsoft Outlook Client emails are legally valid in a court of law, but Thunderbird emails are not. Can we start taking baby steps towards making Thunderbird emails a little more viable in legal applications?
While I do not understand these things in the depth required, can we start taking baby steps towards achieving legal validity of emails downloaded from Thunderbird?
I am presenting below a conversation that I had with chat GPT regarding this matter for the help of anyone who wishes to take this up.
Chat GPT:
QUESTION 1: 1. As per my limited knowledge, Outlook client emails are legally valid because the header cannot be edited. This however, is not true of Thunderbird emails. Do I understand correctly? 2. What are the challenges in making Thunderbird header not user editable, so that Thunderbird emails also have the same benefit?
Chat GPT: Your question touches on email authenticity and legal validity—especially in regulated or evidence-sensitive contexts. Let's break it down:
Is it true that Outlook headers are immutable and Thunderbird’s are not?
Partially True — but needs clarification.
Email headers in both Outlook and Thunderbird
Can be viewed by recipients, but cannot be edited after the email has been sent. Only during composition can certain headers (like `From`, `Reply-To`) be changed, depending on the setup.
What you cannot change post-sending:
After an email is sent (from any client), the core SMTP headers (`Date`, `From`, `Message-ID`, etc.) are locked. These are generated by the sending server and cryptographically traceable via server logs or DKIM.
Outlook’s extra layer:
Outlook integrates closely with Microsoft Exchange, which stores server-side logs, message tracking, and non-editable audit trails (e.g., via journaling). That’s what gives Outlook/Exchange emails more evidentiary credibility, not just the client itself. In contrast, Thunderbird usually connects via standard IMAP/SMTP, without server-side logging, unless used with a corporate mail server like Postfix + Dovecot + journaling.
In Summary: Table Feature Outlook (w/ Exchange) Thunderbird Headers editable during composition Yes (some fields) Yes (same) Headers editable after sending No No Built-in server-side logging Yes (Exchange) No (unless configured) Strong evidentiary trail Common in enterprise Requires external setup
What are the challenges in making Thunderbird headers non-editable during composition?
The challenge lies not in technical impossibility, but in the design philosophy of Thunderbird:
a. Open Source & User Control
Thunderbird is open source, so users can customize or even extend the client to manipulate headers (via extensions or config changes). This is powerful for advanced users, but not ideal in regulated or high-trust environments.
b. Lack of Server-Side Enforcement
Thunderbird relies on whatever SMTP/IMAP servers it connects to. Unless the server enforces policies (like DKIM signing, DMARC, or header filtering), client settings are only soft limits.
c. Missing Native Audit Features
Outlook/Exchange logs metadata like when a message was sent, delivered, read, etc. Thunderbird lacks that unless paired with enterprise-grade backends. How Could Thunderbird Improve Legal Trustworthiness?
1. Header Locking During Composition
Disable or grey out fields like `From`, `Date`, `Message-ID`. Possible via extension, but not enforced by default.
2. Enforced Server-Side Signing (e.g., DKIM)
Ensure outgoing mail is cryptographically signed to verify integrity. Requires a properly configured mail server, not just Thunderbird.
3. Journaling or BCC Archiving
Auto-BCC all sent mail to a tamper-proof archival system. Thunderbird can do this via rules or server configuration.
4. Extension or Mode for “Forensic Compliance”
Custom Thunderbird modes that restrict editing headers, disable extensions, log actions, etc.
Final Thoughts
You're correct in understanding that Thunderbird offers less baked-in legal reliability than Outlook + Exchange. But this isn’t due to insecure design—rather, it's due to Thunderbird’s flexibility and lack of tight server integration. Thunderbird can be made trustworthy with the right server configuration (DKIM, archiving) and possibly some custom add-ons.
If you’re looking to build or propose a “forensic-grade” Thunderbird environment, I can help design one with proper technical constraints and audit trails. Let me know!
QUESTION 2: My legal Counsel has told me that emails downloaded from the Gmail server into the outlook client are legally valid. So even without Microsoft Exchange and all the other server side logging, Outlook emails are legally viable. Chat GPT
Yes — your legal counsel is broadly correct, and here’s the nuanced explanation:
Emails Downloaded via Outlook (from Gmail) Can Be Legally Valid
Even without Microsoft Exchange, emails downloaded into Outlook (say via IMAP or POP from Gmail) can still be legally viable evidence, because:
1. Outlook stores email in a tamper-evident format
Outlook saves emails in `.pst` or `.ost` files. These files have a structured, proprietary binary format that is hard to tamper with without detection. Courts often accept these files (with chain of custody) as original records.
2. Outlook preserves server headers
Even when connected to Gmail, Outlook does not modify or fake headers. It shows server-signed headers (like `Message-ID`, `Date`, etc.) exactly as received. These headers can be verified independently against:
Gmail’s “Show Original” → raw headers DKIM/DMARC authentication
3. Integrity from Gmail itself
Gmail assigns unique `Message-ID`s and signs outgoing mail with DKIM. DKIM proves the message has not been tampered with since it left Google’s servers. So even if Outlook is the client, the source of trust is Gmail + DKIM, not just the software.
In Legal Contexts
4. What courts typically require is:
A copy of the original message as received (headers intact) Some form of chain of custody (who had access, how was it stored) Optionally, confirmation from the mail server logs (if challenged) Outlook is often used in corporate/legal environments because:
It does not let users easily forge full headers The data format is harder to manipulate Legal teams and forensic experts are familiar with `.pst` files
So even without Exchange, emails received and stored in Outlook are trusted, provided:
The full headers are intact The `.pst` or `.ost` file has not been tampered with
5. How This Differs from Thunderbird
Thunderbird also preserves headers and stores messages locally — but: Table: Aspect Outlook Thunderbird Storage format `.pst`/`.ost` (proprietary) `.mbox` or plain text Header immutability Enforced by format Editable via text file (with effort) Forensic familiarity High (in legal circles) Moderate Tamper-evidence Strong (binary format) Weak (editable with text editors)
So Thunderbird messages can technically be altered more easily after download, especially if stored in `.mbox` or `.eml` formats. That’s why they are viewed with more caution in legal settings.
Conclusion
Yes — emails downloaded into Outlook, even from Gmail, are generally accepted as legally valid, provided the headers are intact and the file has not been manipulated. Outlook's storage format and market reputation contribute to its legal trustworthiness — even without Exchange.
If you want to achieve similar legal credibility with Thunderbird, the focus should be on:
Enforcing DKIM-signing (from Gmail, already done) Locking down `.eml` or `.mbox` file access Possibly archiving in tamper-evident formats
Let me know if you’d like a workflow to export Thunderbird emails into a legally robust format similar to `.pst`.
Hello Development team, I am a long-time user of the Thunderbird e-mail client, having used it since it was Netscape Communicator. I have suffered from many upgrades that… (read more)
Hello Development team, I am a long-time user of the Thunderbird e-mail client, having used it since it was Netscape Communicator. I have suffered from many upgrades that did not work well with my style of communication. However, the disappointing upgrade events using TB have been well overridden by the successful use of the overall e-mail client. Today’s topic is the latest upgrade, 140.0.1esr. The message page in dark mode shows darker links and text than it did using the add-on (Dark Mode). I have lost the ability to control text colors and the link status colors. I do not want to wander into the Config Editor to try and correct the linking status with a custom CSS entry. I have discovered the switch on the message panel to disable the “Dark Message Board”. I don’t like this method. I prefer a dark background and the ability to customize the message and link status colors while reading my messages.