Did Thunderbird team forgot the implementation of Matrix Spaces to sorting more better their channels? Because when i use my Beeper, they all got sorted because is based on matrix but when i come to Thunderbird, it's sound like different. I guess Mozilla should fix up and implement spaces for Matrix chat to better navigate betweens channels.

Hello.

I dont know why, but Thunderbird hangs with no error message when trying to retrieve mail from pop3.amis.net.

The mail server is up and running, I just connected to it via Telnet and checked my emails. This behaviour is often, but intermittent. It also seems this happens on 2x windows machines + Ubuntu.

It hangs like this with no error report:

Servers are pop3.amis.net:110
and smtp.amis.net:587 -> sending msg actually works.

Please help.

Firstly, apologies for the length and technicality of this question but I've so far been unable to find this information for the questions below.
Due to the upcoming disablement of basic authentication for O365 Exchange Online by Microsoft on 01/10/2022 we need to enable the use of modern authentication for Thunderbird in our tenant.
We have a rather strict security process in regard to reviewing how applications have been developed for OAuth before they can be approved for use.
To be able authorise the Azure AD Enterprise App registration that is required for Thunderbird to connect to Exchange Online mailboxes using modern auth I need to answer the questions below.
I’ve spent a lot of time searching for this information online, including looking through the Thunderbird OAuth module files at the link below, been able to find the required information.
I'm not a developer or authentication expect so maybe I've not been able to interpret the available information in the correct way but without these answers we can't continue to use Thunderbird that is currently our main Linux email client, this would be a major issue.

https://github.com/mozilla/releases-comm-central/blob/master/mailnews/base/src/OAuth2Providers.jsm
https://github.com/mozilla/releases-comm-central/blob/master/mailnews/base/src/OAuth2Module.jsm
https://github.com/mozilla/releases-comm-central/blob/master/mailnews/base/src/OAuth2.jsm

The questions are:

Does the application use OpenID Connect to authenticate the user? 

I haven't been able to find anything that states it does so assume that it doesn't?

Does the application validate signatures in tokens issues by the authorisation server?
If the OpenID Connect id_token is used, make sure it is properly validated according to the JSON Web Signature, JSON Web Encryption, and OpenID specifications.

Assuming that OpenID Connect is not used then this is N/A

Do you use a code library for you OpenID Connect implementation? If so, is it a certified OpenID Connect implementation?

I think so because In the above .jsm files it states that it has been developed against the following RFC standards but again I can’t find where a specific code library is explicitly stated:

RFC 6749 Section 3.1
Section 3.2
Section 3.3
Section 2.3.1
section 2.3.1

What is the grant type used? Resource Owner Password Credentials and Implicit Grant must not be used.

I’ve found the following in the above .jsm files but I’m not sure of the grant type this is:

if (aRefresh) {,
this.log.info(
`Making a refresh request to the token endpoint: ${this.tokenEndpoint}`
);
data.append("grant_type", "refresh_token");
data.append("refresh_token", aCode);
} else {
this.log.info(
`Making access token request to the token endpoint: ${this.tokenEndpoint}`
);
data.append("grant_type", "authorization_code");
data.append("code", aCode);
data.append("redirect_uri", this.redirectionEndpoint);
}

Does the application use an established library to provide the OAuth functionality?
If a bespoke implementation of OAuth has been used, have the state and redirect_uri parameters been used correctly?
The app must use the state parameter (even though it is not mandatory). This prevents improper validation of the authorization initiator. If the application does not verify that the received token or authorization code was generated in the process initiated by it, the token can be overridden (the state parameter in the authorization request is used to make sure that the obtained authorization code or token was generated for your application.)
The app must send a redirect_uri parameter not only to the /authorization endpoint, but also to the /token endpoint.

All I’ve been able to find for this is a reference to localhost.

If a bespoke implementation of OAuth uses the authorization_code flow, has this been done securely?

Does the application store tokens in cookies or localStorage?

Is this stored in the Thunderbird Password Manager?

If tokens are stored in cookies, are best practices followed?

If the Thunderbird Password Manager is used then this would be N/A

Does the application validate tokens it receives?
e.g. HMAC-based or RSA-based

Again apologies the list of questions but without this information it's going to be very difficult to continue to use Thunderbird once Microsoft disable basic auth.

Many thanks

Owain

Here is a workround (via Mozilla Support), but really this is a trivial but annoying bug that needs fixing.
Top email in thread view not showing bold or starred when new email/starred email inside thread

Hi. Just got myself a new pc with Garuda system on it. Had it for a week or so when suddenly the unified folders stopped working. It works to undo unified folders and all te email accounts show up underneath, and when I turn it on again teh meail accounts/folders belove dissapere, but, the Inbox is empty either way. If i open the inbox and click one of the accounts the show up to the right as they should but if I close the inbox they vanish again. I tried with help of a friend to remove all .msf files to see if that helped but it did nothing. All emails came back and the issue is still there. Can anyone please help with this?

When copying mail from one account to another
Only one folder can be done at a time. There should be an option to copy everything

Are there any plans to make Aurora and Beta available as branches?

If I set a custom notification sound from an mp3 in the settings, the sound doesn't play, not even with the test button.
If I select systemsound it works when receiving an e-mail and with the test button.
I'm using Thunderbird Version 91.1.2 (64-Bit) and Windows 10 and the mp3 works flawlessly with every other program.

I need to build Thunderbird from this archive: archive.mozilla.org/pub/thunderbird/releases/102.5.1 (I don't need the latest version!).

I put the code from the archive in my own git repository.

It was possible to build for Linux.
But I can't build for Windows, it crashes with this error (mach bootstrap):

checking for a shell... C:/mozilla-build/msys2/usr/bin/sh.exe
checking for host system type... x86_64-pc-mingw32
Installing bootstrapped toolchain in C:/Users/r/.mozbuild/node
ERROR!!!!!! Could not find artifacts for a toolchain build named `toolchain-win64-node`. Local commits, dirty/stale files, and other changes in your checkout may cause this error. Make sure you are on a fresh, current checkout of mozilla-central. Beware that commands like `mach bootstrap` and `mach artifact` are unlikely to work on any versions of the code besides recent revisions of mozilla-central.
Hint: consider reverting your local changes to the following files: ['python/mach/mach/site.py', 'python/mozboot/mozboot/bootstrap.py', 'python/mozversioncontrol/mozversioncontrol/__init__.py']
ERROR: Command '['C:\\Users\\r\\.mozbuild\\srcdirs\\desktopmail-f3ac63904a51\\_virtualenvs\\mach\\Scripts\\python.exe', 'C:/Users//Desktop/DesktopMail/mach', '--log-no-times', 'artifact', 'toolchain', '--from-build', 'toolchain-win64-node']' returned non-zero exit status 1.
ERROR: If you can't fix the above, retry with --disable-bootstrap.

Full log output (pastebin)

Is it possible to disable checking for the latest changes in the repository?

To check the functionality of the assembly, I downloaded the original repository hg.mozilla.org/mozilla-central. It was successfully built on Windows. But why can't the version from the archive be assembled?

I tried to fix the python assembly script to remove the check for recent changes. But this mechanism is strongly integrated into the entire assembly, cutting it out is very long and meaningless.

I tried to build an extension for thunderbird. For this extension I need to get all email within a particular date. For that reason I called following

let messageList = await browser.messages.query({ fromDate: fromDate, toDate: toDate });

That code works perfectly but it does not return any email from trash. For my extension I need emails from trash too.even I tried to get email from trash folder by specifying trash folder in query list as below:

let selectedFolder = {accountId: this.selectedAccount.trashFolder.accountId, path: this.selectedAccount.trashFolder.path, type: 'trash'}
let trashMessageList = await browser.messages.query({ fromDate: fromDate, toDate: toDate, folder: selectedFolder });

Even that code does not return result but if I run browser.messages.list It returns result perfectly. What am I doing wrong here? is there any solution for that?

Hi, I have a problem with Thunderbird 60.6.1 (my Office 365 calendar is not working with that, reported at https://support.mozilla.org/en-US/questions/1254946, ExchangeCalendar/exchangecalendar#270), and would like to downgrade to TB 60.5.3, which requires Lightning 6.2.5.3, right? See https://developer.mozilla.org/en-US/docs/Mozilla/Calendar/Calendar_Versions
But I cannot find Lightning 6.2.5.3 in the official download site (https://addons.thunderbird.net/en-US/thunderbird/addon/lightning/), just 6.2.5. Why is it so? Could somebody please fix that and upload the official Lightning 6.2.5.3 there?
(Also, I cannot find Lightning 6.2.6.1 there, which was downloaded by TB 60.6.1, strange... Is this download page somehow "dead"?)

Hello! Could you please improve the Windows 10 notifications? Clicking the notification should open the application and remove it from notifications list but currently clicking just closes it. Thank you!

I'm experimenting a recurrent issue after adding or re-adding the Thunderbird icon to the taskbar in Windows 10. Some time later, from a few days to a few weeks, the icon disappears from the taskbar. Often, before this happens, for a while the icon itself decays: it is replaced by a generic blank icon.

It isn't a recent issue: it happened to me regularly for years, with many different updates of Thunderbird and Windows 10, up to the present time. I didn't experiment a similar issue with other applications.

I've experienced a strange behaviour.
When I send from my java custom mail server a EOF "\r\n.\r\n" to a thunderbird client the DOT became visible in the email display by TB.
When I don't send my EOF TB is waiting endless.
When I send a multipart mail the DOT is not seen in the TB mail viewer.

Single Body Mail -> DOT is seen in the TB Mail editor
[Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Message-ID: <[email protected]> [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Date: Tue, 22 Feb 2022 15:06:43 +0100 [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: MIME-Version: 1.0 [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Thunderbird/91.6.1 [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: To: pra.....-test [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: From: "pra.....-test" [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: <pra.....-test> [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Subject: TEST [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Content-Type: text/plain; charset=UTF-8; format=flowed [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Content-Transfer-Encoding: 8bit [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: X-KIM-Dienstkennung: KIM-Mail;Default;V1.0 [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: X-KIM-IntegrityCheckResult: - [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: -------------------------------------------------------------------------- [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Die Nachricht wurde entschlüsselt. [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: Die Signatur wurde erfolgreich geprüft. [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: . [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] RECV: (null) [Parent 5872: Main Thread]: I/POP3 [this=15d8d080] Entering state: 20

Multipart 'working' Mail
[Parent 5872: Main Thread]: I/POP3 [this=15dbe200] Done opening message stream! [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Message-ID: <[email protected]> [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Date: Tue, 22 Feb 2022 15:11:01 +0100 [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: MIME-Version: 1.0 [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Thunderbird/91.6.1 [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: To: pra.....-test [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: From: "pra.....-test" [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: <pra.....-test> [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Subject: TEST [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: X-KIM-Dienstkennung: KIM-Mail;Default;V1.0 [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: X-KIM-IntegrityCheckResult: - [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Content-Type: multipart/mixed; [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: boundary="-=Part.0.d6b0eef9da28e6c.17f21c595a1.e73db5cfbed87ab1=-" [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: ---=Part.0.d6b0eef9da28e6c.17f21c595a1.e73db5cfbed87ab1=- [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Content-Type: text/plain; charset=UTF-8; format=flowed [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Content-Transfer-Encoding: 8bit [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: -------------------------------------------------------------------------- [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Die Nachricht wurde entschlüsselt. [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: Die Signatur wurde erfolgreich geprüft. [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: ---=Part.0.d6b0eef9da28e6c.17f21c595a1.e73db5cfbed87ab1=--- [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: . [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] RECV: (null) [Parent 5872: Main Thread]: I/POP3 [this=15dbe200] Entering state:20

Hi, latest release version (on day 21.11) of thunderbird x64 still not work with external pgp smart cards.
32 bit version of thunderbird works well with smartcards.
Exact issue is described here https://support.mozilla.org/en-US/questions/1367269.

Could thunderbird bring up multiline view like on this :
https://bugzilla.mozilla.org/show_bug.cgi?id=213945

best Regards

Fail

Ok

I tested via Telnet, I can still write messages after receiving 220 smtp.gmail.com even through the forward proxy (or reverse proxy as shown), why does ThunderBird stop writing messages?

I would like to get more information on debugging and why this is happening.

FYI: The following changes were made to this repository's wiki:

• defacing spam has been removed

• Restricting write access to contributors is strongly encouraged. Please make that change (documentation).

These were made as the result of a recent automated defacement of publically writeable wikis.

Are you these ass holes?

"more than deplatforming"

https://blog.mozilla.org/blog/2021/01/08/we-need-more-than-deplatforming/

In the past, I used CategoryManager addon in order to synchronize my NextCloud CardDAV server groups and been able to send emails to a category and so on.

With the new version of TB (v. 100 and higher), CategoryManager is not compatible any more.

I tried to add an Address Book based on a NextCloud CardDAV server, and it was detected in TB 102 and synchronized without third party addons (like "Provider for CalDAV & CardDAV" and "TbSync"). But I realized that existing contact groups in server are not synchronized. However, contact groups in my Gmail account are synzhronized without any problem.

Anybody can help me? Thanks in advance

Thunderbird 102.10.0 (64-bit)
macOS Ventura 13.3.1

Attempting to change a misspelled a folder name under my main inbox based on character case causes Thunderbird to error saying the existing folder exists and to choose a new name. Are folder names not case sensitive? Cancel is greyed out, only the rename button works and causes the loops.

For example changing "matt" to "Matt" causes the issue with the message: "A folder with that name already exists. Please enter a different name." A single ok button is presented and will either cause the error box to repeat, but sometimes finishes and goes away. When the error box repeats, only a restart of thunderbird will cause it to go away.

Hi, is that normal that the adressbook of thunderbird looks broken like this:

?

after upgrading thunderbird from 102 to version 115 on windows 11, smtp stopped working without any setting changes. receiving mail is working fine. Cleared saved passwords and re-entered it with no effect.

Also tried deleting the smtp settings and re-entered them. same problem. the smtp settings are the standard office 365 settings which remain the same before/after upgrade

server: smtp.office365.com, port: 587, security: STARTTLS, Auth: OAuth2, username: my email address.
thunderbird version: 115.2.3
Windows 11 version: 22H2(OS Build 22621.2283) Latest patched version

I have unchcked the option for one email account to receiving emails every xxx minutes. Only once after starting thunderbird.

But I get every fiew minutes notifications, that new emails are received.
Does this configuration not accepted?

Thunderbird 91.3.2 (32-Bit)

For me, it seems like "quoted printable" encoding is ignored and the content is inserted as 7bit or similar - but only using "forward" from the ui (see screenshot). This will not happen by clicking reply (which should be more or less the same?)

Screenshot:

The recieved mail is composed as follows:

[...]
Content-Type: multipart/mixed; boundary="=part-mixed-irVzrrizqIfPKYwt"
[...]

--=part-mixed-irVzrrizqIfPKYwt
Content-Type: multipart/alternative; 
	boundary="=part-alternative-HQmbODIqpdIIhOG6"

--=part-alternative-HQmbODIqpdIIhOG6
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="utf-8"

PLAIN TEXT VERSION
--=part-alternative-HQmbODIqpdIIhOG6
Content-Type: multipart/related; 
	boundary="=part-related-LXAvm92Qx6zMYqfM"

--=part-related-LXAvm92Qx6zMYqfM
Content-Type: multipart/mixed; 
	boundary="=part-mixed-html-k9gbrsCXPhTvmUHb"

--=part-mixed-html-k9gbrsCXPhTvmUHb
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="utf-8"

HTML VERSION

--=part-mixed-html-k9gbrsCXPhTvmUHb--

--=part-related-LXAvm92Qx6zMYqfM
Content-Type: image/png; name="logo.png"
Content-Description: "logo.png"
Content-Disposition: inline; filename="logo.png"; size=17635;
Content-ID: <logo.png>
Content-Transfer-Encoding: base64

THE IMAGE INCLUDED BY CID

--=part-related-LXAvm92Qx6zMYqfM
Content-Type: image/jpg; name="banner.jpg"
Content-Description: "banner.jpg"
Content-Disposition: inline; filename="banner.jpg"; size=401671;
Content-ID: <banner.jpg>
Content-Transfer-Encoding: base64

ANOTHER IMAGE BY CID

--=part-related-LXAvm92Qx6zMYqfM--

--=part-alternative-HQmbODIqpdIIhOG6--

--=part-mixed-irVzrrizqIfPKYwt--

If someone with access and knowledge could post this into BugZilla I would be thankful. I am not a user of thunderbird myself, but I wanted to post this on behalf of a customer who is.

I have a clickable PDF, where you can click the index to go to the referenced page.

But when I click it, it goes to the correct page but also opens an empty tab:

As of January 1 2019, Mozilla requires that all GitHub projects include this CODE_OF_CONDUCT.md file in the project root. The file has two parts:

1. Required Text - All text under the headings Community Participation Guidelines and How to Report, are required, and should not be altered.
2. Optional Text - The Project Specific Etiquette heading provides a space to speak more specifically about ways people can work effectively and inclusively together. Some examples of those can be found on the Firefox Debugger project, and Common Voice. (The optional part is commented out in the raw template file, and will not be visible until you modify and uncomment that part.)

If you have any questions about this file, or Code of Conduct policies and procedures, please reach out to [email protected].

(Message COC001)

Authentication exchange lags and sometimes fails to respond while using it as a daily driver, reporting the bug since its a beta proramme and the bug report may help you create and clear a structure for better understanding model. The issue lies only in the multi-log-in environment, and the conflict only occured while reciprocating with the google server, I haven't checked any other host servers, besides I have two other outlook accounts logged in as well. Comprising of four, the bug lies only in google servers I guess, as I haven't noticed any lag activity while using the outlook.

If anyone else felt this issue, can upvote this issue so we get a quick fix to it.

After a user has downloaded the headers he is not able to fetch the full message.
There should be a menu item on the message which allows this behaviour!

Dear Mozilla Team

Lately I noticed that since version 102.x email addresses with a hyphen after the @ sign for example namexyz@noreplay-mail comes a certificate error regardless of the toplevel domain.

As a result, I have tried various email tools (proprietary as well as open source) on Windows, Mac and Linux. Always with the same result. Certificate error xyz

Procedure:

1. the first time I start the Thunderbird client with the version number from 102.
2. i enter the necessary information (display name, email address and password)
3. usually for e-mail addresses without hyphen (-) in the domain name come the ports (imap or pop)
4. if I try to accept the error message and the certificate error, this message pops up about 6 times, until it can only be solved by closing Thunderbird after that

In the meantime I have found a workaround, but it is a pity for the so far very good engine of Thunderbird with the automatic detection of the ports, that this could not be fixed "yet" since version 102.

Workaround:
Same as steps 1 to 3, then click on the item "Edit manually". After that you can add the email ports.
So far I was used to this exclusively from Outlook from Microsoft.

Maybe in the future it will be possible again to enter the mail address when creating a mailbox with a hyphen using the automatic configuration.

For any additional questions I am very happy to be at your disposal

I created a PR for:

• *converting authors file into a .md file;

I would also suggest that:

• *we create a .txt version of it;
• *we create a .rst version of it;
• *we create an .html version of it;

further more I believe it is important to:

• create files with contribution policy, a readme, and so on so forth following the same template

When receiving an error in the process of creating email accounts (popup dialog), they appear in white font over a light yellow background, making it impossible to read. When trying to change the theme to suppress the issue, none of the themes change the background or font color of the error messages that appear in the account creation popup. Tested with themes: Standard, Dark and Light.

Thanks for attention.

When un-ticking permanently store this exception for the Add Security Exception popup window and confirming the security exception, the popup window would show again during the same/next connection attempt

instead of accepting the security exception

I cannot see any of my emails in inbox or sent:

It works to send emails and receive.... I do not know what else info to provide except that. I use Thunderbird for years now and relied on it, but now I can't.

Am using XFCE/Arch.

When I click to read a whole shared mailbox in the list, it get´s read but after switching to another mailbox and back the mails are unread again. It´s no probem with our Mailserver itself because with other clients everything works fine.

Hi, i have a problem with thunderbird ver 115.
I use laptop and external monitor.
Laptop screen resolution is 1920x1200 and when i switch picture my external monitor ( 2560x1440 ), then thunderbird view not scale automaticly my view.
I take some pictures:

https://ibb.co/gShJ6Jp
https://ibb.co/V3YFZTp

TB 102 imap status response error when server reply with UIDVALIDITY property.

Problem detail check here:https://support.mozilla.org/en-US/questions/1414656#answer-1584202

the Inbox contains several mails including notification mails of social media accounts, promotional mail and offers.
Users need to filter the mail on their own and the most commonly used section is spam filtering.

If we introduce and ML model filter typically designed to filter promotional mail and social media notification mail into differetn subsections as in the case of gmail, it would make it easier for many users.

In version 91.4.0, I cannot find the way to add self-signed certificates so that TbSync can work.

The procedure described doesn't seem to be available anymore, at least following the mentioned steps:

1. in Mozilla Thunderbird, go to Tools > Options > Advanced > Certificates.
   

2. click on "View Certificates" and go to tab "Servers".
   

3. click on "Add Exception".
   

4. enter the name of your server and click on "Get Certificate".
   

5. save the exception.
   

How to do it?

sa

Newest Thunderbird (14.8.22 10:25) (just updated).

Sented messages shows up twice. Friend just told that my emails come only once, but at "Sent" it shows those were sented twice.

Often the config is the issue.
Being that the first 'known' account with email received addy is used to attempt smtp.
There are a number of reasons the smtp attempt may fail.
Though the invitation is not aware of this being so.
No way of re-setting invite to 'unread'.
That I could find.
Firefox, Mozilla, Thunderbird is/are amazing.
Thanks!
MarkT

After updating Thunderbird to 91.6.2, in Windows, when opening an attachment in Thunderbird, it goes to "Temp\pid-16976" instead of the usual "Temp". There was no indication in the release notes that this was changed or any reasoning given for it.

There should at least be an option to prevent it from going into a subfolder.

When trying to schedule an event using a calendar accessed by CalDav, I get the following error message:

Lightning: CalDAV: Unexpected status adding item to NC: 404 CalDavCalendar.jsm:631
BEGIN:VCALENDAR
PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CREATED:20201106T081519Z
LAST-MODIFIED:20201106T081530Z
DTSTAMP:20201106T081530Z
UID:b856b490-5f72-7e49-8161-92c607b57ebc
SUMMARY:CaldV
DTSTART;TZID=Europe/Berlin:20201107T130000
DTEND;TZID=Europe/Berlin:20201107T140000
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR

Only happens on OSX (10.15.7), issue is not reproducible on various Linux platforms (FC33 with 78.4.0 and Groovy with 78.3.2).

Let me know if more info is required.

I would like to use Thunderbird with my own OAuth provider. There doesn't currently seem to be a way to specify OAuth providers outside of the ones in OAuth2Providers.jsm. Minimally accepting a config file of some kind would be fine.

Per

• X-MOZ-LASTACK
• X-MOZ-GENERATION

The change would look like this:

  compareContent(aFirstItem, aSecondItem, aIgnoreProps, aIgnoreParams) {
    const ignoreProps = arr2hash(
      aIgnoreProps || [
        "SEQUENCE",
        "DTSTAMP",
        "LAST-MODIFIED",
        "X-MOZ-GENERATION",
        "X-MICROSOFT-DISALLOW-COUNTER",
        "X-MOZ-SEND-INVITATIONS",
        "X-MOZ-SEND-INVITATIONS-UNDISCLOSED",
+        "X-MOZ-LASTACK",
+        "X-MOZ-GENERATION",
      ]
    );

A simple diff using diff -u a.ics b.ics | diff-so-fancy of a calendar synchronization of ICS files shows that these two properties are the only ones that change outside the ignored ones: