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All my email accounts are hosted at siteground. I recently created a new domain, website, and two email addresses there. Siteground support tested the new email addresses and said they work fine. But when trying to set up these new email accounts in Thunderbird - 128.5.2esr (32-bit) - I keep getting error messages. I know the passwords are correct because I checked them in Settings. After the first step in setup, I always get "Configuration found at email provider". If I click "Done", I get "Unable to log in at server. Probably wrong configuration, username or password". If I click "Configure manually" and then "Re-test", I get "Thunderbird failed to find the settings for your email account".

I tried the help article, but it seems to be out of date and doesn't match what I see.

I have an Inbox with 4 emails.

Then I have another email that has an inbox beneath. I'd like to add this fifth inbox to the global inbox.

My email messaging seems to be set at a defined format with double spacing. I prefer to use single spacing but in order to do this I have to type all the way to the end of the page and then it will automatically go to the next paragraph and will then use single spacing. I would really like to be able to format my emails with single spacing and different margins other than what I have to use now (i.e.using the entire width of the message). I cannot find any way to change this automatic double spacing and change the width of the paragraph at the same time. From the drop down list directly above the body of the message, I have tried changing from Body Text to Paragraph and back again, but nothing works. Thanks very much for your help.

P. S. I am using Windows 10 with Thunderbird version 128.4.2 esr. I had the same problem in more recent versions but not in older versions.

I tried to Send an email, but the Send option at the top left of the email has changed to Send Later and the email does not send.

How do I change that option back to Send?

In reply messages, Thunderbird (macos 128.10) adds an indent to the subject line in the pane view. When the thread is very long the subject disappears because of the successive indents. Is there a way to remove these indents by default? Thanks in advance. Gérald

I reinstalled Windows on my PC along with Thunderbird. I can not find how to set the view to the way it was.

I added two jpgs to show the difference. (The way it is now and The way I want it to look.) Is there a way to change the way Message List looks ? ( I guess the Message List is the upper right part of the screen?)

Im the Adjutant of the local chapter of DAV. I have a email list of all the members I would like to send Meeting notices and other information out to. It is related to the chapter only and not to be used as spam mailings.

How do I take the list and make a mailing list out of it?

Thanks

Rick in Everett

I tried gleaning this single outgoing email of "excessive spam/sales language" (I am only thanking someone for their purchase, not asking for another); "excessive links" (they and their graphics were fine before). no "excessive emailings/quantities" (I am only sending one single email and don't do more than a few with this content ever and haven't send even one email like it in weeks); co0ntacted my internet provider (RCN Astound can't help me and told me to contact Thunderbird), I already checked POP & SMTP stuff...

"Sending of the message failed. An error occurred while sending mail. The mail server responded: [VO-101] Message blocked due to spam content in the message.. Please check the message and try again."

What do I do?

I even checked that I had the latest version of Mozilla Thunderbird: yep! :/

Guys, I am on TB 128.6.0esr (64-bit) and I am using TB since Netscape era (25 years now).

Since last update, when I try to forward an email in my Sent box, it produces a blank window with only the subject filled-in. No content, no attachments.

I tried Repair to the box but it's still the same.

The problem happens with all recent mails but not with all older mails. For example, some older mails, sent e.g. one year ago, or more, when clicking forward, behave as expected, with content and attachments. Other ones, however, do not work and open as blank windows, as I explained.

It works always with "Forward as Attachment", but this is NOT what I want.

Has anyone faced this problem? Do you have any suggestions? Should I file a bug?

Please advise.

Thanks, Nick

Many messages I receive do not wrap in either the message pane, or when opening the full message viewer (into it's own tab). See the images attached.

I've tried the following approaches (very old thread though): https://superuser.com/questions/702484/can-thunderbird-wrap-long-lines-of-received-html-mails

i.e. creating a 'chrome' folder under my profile, and a userContent.css file under that, trying several of the suggestions for content of that file. None seem to make any difference.

The example message pics here are sent from gmail.

Thanks in advance!

I'm new to Thunderbird and it works great. One question though, why doesn't the junk mail folder auto update with unread emails like my other folders? It seems I have to manually refresh to update only the junk mail folder.

What setting do I need to change so that threading does not occur in any of my email folders? I hate this feature and wish to remove it permanently.

Thanks, Steve

Pressing Get Mail icon displays some 8 messages in bottom ((.)) line of Thunderbird including <provider URL>:Connected to <account email address> and finally Checking mail server capabilities. Up to 4/1/2025 that got all the new emails of the account but since then no emails get into Thunderbird in any of the account's folders.

I am using Linux Mint Cinnamon 21.3 and Thunderbird POP3 email. I have 10 email accounts.

What I have noticed is the Thunderbird 128 series startup email check and/or "get all messages" is quite slow compared to previous versions.

Thunderbird 102.15.1 took only 4 seconds to check 10 email accounts, Thunderbird 115.18.0 took 5 seconds, but Thunderbird 128 and 136 series takes 15 seconds. All of these have used the same user profiles.

There is no antivirus software active. All messages are deleted from all accounts. No messages to download and checking for messages is still slow.

I have tried the Betterbird 128 series, a fork of Thunderbird, and it too behaves the same. Betterbird 115 series work fine, just like the Thunderbird 115 series.

Is this slowness in the 128 and 136 series by design?

Hi everyone,

I've been using Thunderbird for a few months now and never had any problems until today when I've updated to 128.5.0esr. I'm using iCloud email and suddenly my Sent folder disappeared. When I started TB it showed up and disappeared after 2-3 seconds. It happened few times when I tried to restart TB however now it's permanently gone. I didn't change any settings and the folder is visible in Apple Mail or Spark, however it's gone from TB. Any idea what's going on? Please help.

Thanks, Szymon.

I recently switched over from mailbird to thunderbird. I'm adding all my accounts but for some reason one of them won't show in the left side panel. Anyone have any ideas how to fix this please

I just recently switched to Thunderbird and Libre Office to get rid of MS365. I am happy so far, if there wasn't one particular issue which I do not find a solution for:

I know how to sort messages with the newest on top, I know how to toggle the threaded view on and off. But I would like to use the threaded view and find it impossible to adjust a descending order within a thread. So I end up with the newest thread on top, but the thread headline shows the oldest message and if I unfold the thread it's in ascending order.

This is a major issue for me. To avoid overlooking incoming mails, I need to switch of the threaded view. Websearch didn't provide me a solution.

Sending a mail results in the following message:

Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: Disallowed HELO string.

Message filters not working after transfer to new windows device. (Apologies for long report below). Problem is similar to that reported and still unsolved here: https://support.mozilla.org/en-US/questions/1391209

All old messages automatically accessed under IMAP protocol sit within correct email folder on new device.

Message filters rules successfully located on old device, copied and placed in corresponding windows folder on new device. Email folder structure looks identical on both devices.

New messages sit in inbox on new device, without being filtered. Instead error messages appear, repeatedly.

"The folder 'xxxx' could not be found, so filter(s) associated with this folder will be disabled. Verify that the folder exists, and that filters point to a valid destination folder.

The folder 'yyyy' could not be found, so filter(s) associated with this folder will be disabled. Verify that the folder exists, and that filters point to a valid destination folder.

If same new messages are accessed on old device, they later appear in correct folder on new device, and no longer sit in inbox

How to make email folder structure on new device visible to filter rules there ? This is necessary for filtered email to work successfully on new device, without requiring old device to be operational - it will be taken out of service in near future.