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Keeps on telling me it can't authenticate the outgoing SMTP server for both of my email accounts. Have checked settings and all appears to be in order. I do not want to re-load my accounts because the last time I did that I lost all of my messages because of being on POP 3 setting.

I (by mistake) tried go attach a file that was too big to send in a Thunderbird (gmail) message. Even though I click "Cancel" to the warning "Warning! You are about to send a message of size 29.6 MB. Are you sure you want to do this?" the warning reappears each time I open Thunderbird (and I have to close and restart it to have it send any e-mails). The offending message is not in the drafts or trash folders. How do I tell Tbird to stop trying to send this message?

Hi,

I have configured a Matrix account in the [Chat] tab but am unable to delete it. Going to the accounts menu and pressing the red "Delete" button doesn't do anything. I am not aware of a way to delete it using configuration files (I am on Windows)

Thanks !

Hi guys,

I'm communicating with some colleagues using S/MIME encrypted messages. I have already imported all the necessary licenses, and all licenses are valid until 2034. I can receive and read all the encrypted messages they sent me, but every time I try to reply or send them (the same people) encrypted messages, the error pops up saying 'End-to-end encryption requires resolving certificate issues'. I already checked all the licenses but couldn't find any issues. Can you suggest some ways to resolve it? Thank you!

Hello, I have Thunderbird 115 on a Win10 HP laptop. Until today, I could both send and receive emails OK; today, I can only receive emails, for some unknown reason I have an error message with sending only, reading: "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.fastmail.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again." The SMTP settings match what is on Fastmail's website for POP3. I haven't done anything I can think of since last using Thunderbird that would trigger this. I have updated successfully to Thunderbird 128 OK and that hasn't solved the problem. The email provider is Fastmail (I've been in touch with them, they have given advice, so far, no luck), SMTP settings are on the attached image. The ISP is NBN (National Broadband Network). Antivirus software is McAfee Premium - Individual. It is really frustrating.

Steps to reproduce:

1. Using Betterbird/Thunderbird 128.9.2esr-bb25 (64-bit), navigate to "Address Book"

2. Using "Address Book" "List display options". Type in any phone number

3. No result are display. This is the challenge. The needed end result is to search all Phone Number field for all contacts. Including any additional "Phone Number" field per contact if any. For example, but not limited to, "Phone Number 1", "Phone Number 2", "Fax Number", etc.

Using this on device 1:

• Betterbird/Thunderbird 128.9.2esr-bb25 (64-bit) from Arch Linux repository

• Arch Linux latest version

• KDE Plasma latest version

Using this on device 2:

• Betterbird/Thunderbird 128.9.2esr-bb25 (64-bit) from https://flathub.org/apps/eu.betterbird.Betterbird

• Debian Bookworm 12

• GNOME 43.9

What I tried that did not work:

• Add-on "Contact Tabs" does not support Betterbird/Thunderbird 128 at https://addons.thunderbird.net/en-US/thunderbird/addon/contact-tabs/

Years ago I created a local folder D:\mail for old mails nice to have, but not needed on the server. It works very well. But it seems that it is no longer possible to create a folder like that, separate from the rest. It seems that a new folder should either be created under the general mail account or under Local folders. So is this type a left over thing, no longer possible, but for a while maintained for compatibility?

In the last couple of days sending of two emails has failed. On both occasions the error message has reported that the message has been 'rejected for policy reasons'. It concludes 'Please check the message and try again'. What can cause this in a message? What should I check for?

When I receive an email with double line spacing I can't find a way to alter this to single line spacing. I'd like to be able to change from one to the other at will. M

Hello, sorry for the question but I can't solve it alone

My issue : I think my emails have been deleted. Its something like 500mb of content.

I'm on Windows 10; on 128.9.2esr version for Thunderbird.

You see how the path is structured: account@mail.com/inbox/... I moved my mails folders into the folder account@mail.com (instead of account@mail.com/inbox/) Closed thunderbird Restarted thunderbird

All folders at account@mail.com/ disappeared.

I tried to find them. I created a folder named "TestAccountFindThunderbird" I moved account@mail.com/inbox/TestAccountFindThunderbird into account@mail.com/TestAccountFindThunderbird Closed thunderbird Restarted thunderbird "TestAccountFindThunderbird" disappeared as well

and making a research on C:\ drive I managed to find TestAccountFindThunderbird.msf inside the folder at C:\Users\<my_account>\AppData\Local\Temp\MozillaMailnews

At the same place I found also the other things that disappeared from my mail account Health.msf, Apple.msf, Work.msf, Insurances.msf, Bank.msf, ... But they are all .msf files...

I saved them into a backup folder. Then I copy pasted all that content from backup to INBOX.sbd but when I open Thunderbird in a blink they are all removed. I guess its because they are .msf and not actual content.

1) Why when I move a mail folder into account@mail.com/ then the folder disappears/is deleted? 2) Where are my emails? And how do I reimport them? 3) Why do I have traces of them into AppData\Local\Temp\MozillaMailnews?

Thanks in advance

All my messages in iOs are showing in plain text. How can I view them in HTML? I have searched all the settings but can't find a switch for that.

Thanks.

Ed

Last time thunderbird used to list the message by column. Refer to diagram 1 middle section. Now they list it in up down. Refer to diagram 2. Anyone know how to change back to list by column ? I am now using ver 137.0.2 (64 bit).

I have about 30 messages in my Thunderbird inbox, but when I backup my profile it backs up some 700 messages, most of which were deleted long ago. Clearly deleting them doesn't actually delete them at all. How do I solve this please? Any ideas?

Thunderbird 128.9.2 POP3 mailbox Windows 11 Pro

Thanks Mike Phillips

I've just upgraded to Tbird 102.15.1 and I've noticed that PDF attachments now open in a new tab (ie, in the same way that a new email would open in a new tab). Previously, they opened separately in Adobe Acrobat Reader. Is this a new Tbird feature? Can it be turned off (ie, revert to the previous method) and , if so, how?

Appreciate any help to understand this.

Hello

I downloaded mails from my imap server to desktop and deleted them from the server. To see them when I am not at home I wanted to import them in the TB app.

I installed the app, used the QR code from TB desktop to import the data and inserted my password. After importing I only see mails from my imap server but no mails which are only stored in the TB desktop.

Why? Is there a way to import these mails in the app too?

Thanks in advance Tom

我把一个账户从thunderbird中删除了，并且在发信服务器中删除了对应的发件服务器，但每次打开thunderbird时，软件依然要我输入该账户的密码以连接该账户，怎么办？ I removed an account from thunderbird and deleted the corresponding outgoing server from the outgoing servers, but every time I open thunderbird, the software still asks me to enter the account's password in order to connect to the account, what can I do?