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When Tbird first began it was easy to see which folders were Imap and which were local. That distinction disappeared a while back and I still had all my imap folders but no indication of which were which. When I want to access them the popup menu did show "gmail" (since that is my email domain) and the imap folders there. But when I go to create a new folder it does not show up in the imap list even though I want it to be an imap folder.

How do I create/manage an imap folder in the current Tbird?

My email is no longer working. Is this a Comcast. net problem or a Thunderbird problem? You have me in your database per my original set-up which is still correct. Can the issue be due to ne update requirements?

Running Thunderbird 115.10.x on Windows 10 Pro 22H2 on an older Samsung Note 9 Pro 15 w/ an 8th gen Intel i7, 16GB RAM and an aftermarket 1TB SSD w/ over 660GB of free space. I have emails going back to 1997 in the Sent folder (16K sent emails). While running Thunderbird 115.9.x earlier today, I noticed I suddenly could not delete emails out of my Inbox. The following error message was displayed:

The messages could not be moved or copied to folder 'Trash on [username@domain.com]' because writing to folder failed. To gain disk space, from the File menu, first choose Empty Trash, and then choose Compact Folders, and then try again.

So I did that to no avail. I then tried to delete messages out of other folders as a test (Sent, Drafts, etc.) figuring I could simply move them back if successful. Received the same error message. Closed all applications and rebooted the laptop as it had been running for several days. Same error message.

Did some research which all told me to delete the Trash MBOX files (including the .msf file). Did that, same result. Launched in Safe Mode, same result. Created a Trash.txt file, removed the .txt file extension and relaunched Thunderbird. Same result. Compacted all folders and relaunched. Same result.

If I backup the current folders and restore from them, I'll get the same result. Anyone have a new idea or set of instructions I can follow?

Thanks!

Bonjour Depuis votre mise à jour du 20 mars 2025 je ne peut plus envoyer des messages avec mes adresses courriels videotron. J'ai essayé de supprimer le compte pour le réinstaller d'abord avec un compte mais impossible de le rajouter à Thunderbird, j'obtiens un erreur inconnu à la recherche du serveur sortant smtp.videotron.ca Je peux cependant recevoir mais pas envoyer pour les autres adresses de compte videotron. Mes comptes Hotmail et Gmail fonctionne très bien. Merci de venir à la rescousse. Danièle

My Thunderbird client has stopped receiving more messages. The size of the inbox is 4.5. Is there a limit on the inbox size? If so can it be increased?

Thanks

William

As of yesterday, 3/18/25, I can no longer dismiss or pause and calendar notifications. The drop down works but the dismiss or pause doesn't work. All I can do is close the Window. This seemed to start after a Microsoft update/restart. Gee, who'd a thunk it? Jeff

my old email was stolen and i cant get my emails on gmail and where can i learn how to remove old emails and add new email client

I am having issues with Thunderbird accessing emails from Comcast.net. This issue started over the past weekend. Nothing has changed with our Comcast setup or our Thunderbird setup. Please advise.

Thanks. Sam Orner

Hello,

Please apologize my errors, english is not my mothern language. So, my vocabulary may have some lack, and the terms i use to describe some menu's elements are not the one used on the english version.

Last friday, Win 10 update itself. Cause a lot of trouble. I've uninstall this update and all seem to be well again. With Thunderbird, the main problem was i was unable to send a message : smtp problem (which is not due to thunderbird nor from my mail provider, but from W10's update) But there still a problem with my beloved thunderbird : - the templates i use are inactives. When i double-click on them, nothing happen. Even with right-click, "new message from template" : nothing

The only way to use them is to right-clic > open > open in a new [tab/window] > copy and paste in a new message... Even "Modify as a new message" is not working except if i first open it in a new window (and then, when in this new window, CTRL+E).

Before that mess, i was running 128 ESR (up to date).

In desperation, i've done that : - Testing new install of 128 ESR with no uninstall of previous version : same problem - Testing new install of 136, with no uninstall : same problem - Done these both again with uninstall : same problem.

Restarting my computer each time, off course (some much time lost from this morning... ) That's feel me crazy !

I will be grateful to have some help.

PM

PS : W10 because it's my work's computer. No choice for the moment

Hi everyone, I use Thunderbird with the integrated calendar extension to invite people to meetings. Within Thunderbird, the message and invitation arrive just fine: you can read everything when the email arrives in the normal message area. However, when I send the invitation to clients using Outlook, they only see an empty email with the option to accept the invitation (or not). Once they accept, the email disappears from their inbox (which is probably a different problem). More importantly, when they open the appointment in their calendar, they have to click on an attachment before they see the description (i.e. the link to an online meeting).

It seems that the invitation sent by Thunderbird is not fully integrated.

Does anyone know how to fix this? Looking forward to your response,

Unable to open the summary file for [Gmail]/Sent Mail on myemail@gmail.com. Perhaps there was an error on disk, or the full path is too long.

I am plagued with this error message on various accounts. The folders have opened before and it exists on the Gmail website application.

The SSD is fine with plenty of available space. Over twice needed by the system.

The profile folder is 65GB. Can Thunderbird handle that much data storage?

Baffled john

I am only able to send an email by opening Thunderbird and selecting write.

If I try to attach a file by starting with the file > send to > mail recipient or try to trigger Thunderbird with an email address in a browser or start with a distribution list in the address book, all fail.

All produce the following diagnostic: "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) localhost failed. The server may be unavailable or is refusing SMTP connections. Please verify that your outgoing server (SMTP) settings are correct and try again."

How can I search messages' Date field for a time? e.g. to find all messages at a certain time in any day.

"Date is 18:51" fails to match.

If I create a custom field "Date" which apparently presents the field as plain text, "Date contains 18:51" matches e.g. Date: Sun, 5 Nov 2017 18:51:34 +0000 but I believe fails to recognise time offset.

Thanks.

I got a new PC with Windows 11. I installed Thunderbird, activated the private calendar, and entered events there. For events with a reminder that have a specific duration (e.g., Wednesday from 10 AM to 11 AM), I receive notifications. However, when I create a full-day event and want to be reminded, for example, 1 day before, I don't receive any notification. Additionally, events with a reminder are not shown in bold in the calendar overview (whether they have a specific duration or are all-day events). Can you please help me?