Thunderbird Community Forum

I have been using thunderbird for years, Spectrum recently made changes and now I cannot get my emails. My email address has not changed. I have allowed thunderbird to set up email and I have manually configured the settings per TWC, and thunderbird. I have confirmed the connection but still no new emails are coming in. Any help would be greatly appreciated. Thank you.

I'm not sure if this is a right place to ask, but since calendars are on Thunderbird page I guess it is. I downloaded a calendar from https://www.thunderbird.net/uk/calendar/holidays/ for Ukraine (direct link -- https://www.thunderbird.net/media/caldata/autogen/UkraineHolidays.ics) and it doesn't contain any holiday. I did that from my Nextcloud server and directly from browser -- both times result is the same.

Using Thunderbird 115.18.0esr Supernova 64-bit on Mac laptop OS 10.13.6. Worked fine for years, with ongoing Thunderbird updates, even though Mac OS is 32-bit. Suddenly, after 10/6/26 can't retrieve emails although I can see them on the ATT Yahoo server website. Can still send emails with Thunderbird. Inbound server settings are: POP server inbound.att.net, Port 995, SSL/TLS, Normal Password (I long ago created a Secure Mail Key, and even tried creating a new one). But inbound server name doesn't show in Saved Passwords (only outbound server with Secure Mail Key as password)? I have tried everything suggested, repaired my inbox folder, updated Thunderbird files, etc. in Profile as recommended. But still no prompt for password when attempting to get messages. Just shows "Done" at bottom left with no new messages received. But new messages are seen on server website. So it appears that Thunderbird isn't able to connect to the ATT Yahoo server to get emails. Why? And what else can I do? I love Thunderbird and want to continue using it.

If I want to respond to a message, using the sender’s Email-address as the addressee, I always get the following response: “A unique identity matching the From address was not found. The message will be sent using the current From field and settings from identity Prof. Dr. Manfred Lange <m.a.lange@cyi.ac.cy>.” How can I make Firefox use the sender’s Email instead?

today all my incoming emails are going into my Local deleted folder for some reason and trying to put them where they belong in the inbox simpy means they go straight back to this deleted folder, I have tried to look at the settings but cannot see why it is doing this. Thank you for any help regards Paul

Meine Festplatte ging kaputt. Auf der neuen Festplatte können meine in den dortigen lokalen Ordnern abgespeicherten emails nicht mehr gelesen werden. Ich weiß, dass diese noch irgendwo vorhanden sind. Wie komme ich wieder an diese?

This seems to have occurred in the last month or so.

Whenever I click on a message in the folders pane, the message is not displayed correctly in any of the three layout views but, if I am offered to display in a browser, it does! Also, if I select 'Edit as a new message' it displays correctly, as also do iPhone and iPads. The screenshot shows the problem?

Any ideas, anyone?

I use Thunderbird with a info@... account hosted by TransIP.

When I send an email, especially when I reply to a previous email and even more when this was my own email, the sent email is not always saved in the Sent folder: neither in the webmail of TransIP nor in Thunderbird. It seems random when emails are and are not saved in the Sent folder.

The replies are sent through; the recipient receives them.

What can I do?

I am running Thunderbird 140.7.1esr (64 bit) running on Ubuntu 22.04.

I need to filter some emails, and need to filter by the "reply to" email.

Reading elsewhere, I followed the instructions, and created a new custom tag to filter (and checked in the advanced part of the settings, and saw that under the mailnews.xxxx there was the "Reply-To" header set up.

I then set up a filter to use this new tag (sorry if my terminology is incorrect), and ran it on a mailbox, where I know there are emails with the Reply To email address is present, and not one of the emails was affected by the filter.

What am I doing wrong?

Many thanks for your help.

When I transfer messages from an on-line email account to a local folder, they do not display in the local folder. Activity manager states the messages have been transferred.

I accidentally created an iterative loop using a forwarding Filter and bcc the sender. This resulted in me recieving multiple copies of e-mails each with subject beginning Fwd: Fwd: So I tried to clean them up by QuickFiltering for Fwd: Fwd: and I got a lot of hits for Fwd: alone. Please spare me from search engines based upon the matronly idea that I couldn't possibly know what I want to search for. -Does Quick filter support phrase search?

Hi there, I have several email accounts I use Tbird to manage. One of those is a hotmail account. I have the settings setup correctly for IMAP synchronization. But, after the initial pull of messages, the connection to the server seems to fail? For example, I open tbird, it pulls in new messages, run filters, etc... If I come back and try to reply to a message, the outgoing server will timeout (if you test the outgoing server in settings, it connects. If you reply as soon as you open tbird, it will send a message from that outlook account). I believe this issue is more than just the outgoing server. For example, if I move an email to a different folder, it won't register the move until I reopen tbird? Similarly, sometimes if I try to open a message after tbird has been running for a while, the message will not open/fail to load.

These issues seem to be impacting only this outlook account. I'm really not sure where to go with troubleshooting and looking for guidance.

much thanks, Ryan

Unable to open the summary file for Sent on xxxx@gmail.com. Perhaps there was an error on disk, or the full path is too long. I have tried to connect my second gmail account. The first one went ok. With the 2nd on the Inbox and All Mail folders initially gave this error, but Repair fixed both, Sent and all other folders have this error and Repair no longer fixes the problem. Then I noticed that I was then unable to delete emails from 2 inboxes including Thundermail inbox.

The email from ALL of my other active accounts (7 or 8 of them) all download fine.

Only ONE account throws off the Unable to Write Email to the Mailbox!

I have rebooted, I have compacted folders, I have repaired the folder - same result. Only ONE of my numerous emails fails to download messages.

ALL of the email databases are in the same subdirectory that Thunderbird (obviously) has complete read/write access to.

What now???

Not sure where/how to post this, so starting here (and happy to move/amend this posting as appropriate.) 15-Oct-2026

Background: I've got a yahoo ("free") email account for many years, and wish to move the current contents of my Inbox to a folder (on imap, not local). Recently yahoo appears to have moved to "cloud" arrangement internally (not sure, but it appears to be the case.) The problem I'm experiencing (below) I believe may be yahoo's back-end cloud processes getting out of sync with Thunderbird's view of the same activity. Therefore, I'm seeking help on how to accomplish this (=I don't think there is a bug in Thunderbird, rather this is a plea for how to manage yahoo's email service for my account.)

Symptom: Moving large number of emails between folders both hosted on yahoo, peers to my inbox on yahoo, using imap - the "export" imap service). Thunderbird says it completes the task, but many (not all) of the moved emails re-appear in yahoo's inbox after a short time, so this makes moving a large (more than a few hundred) emails a *very* laborious process.

What I'm trying to do: I wish to move my current inbox (has about 7.5K messages) to an IMAP-hosted folder (same account, etc.,yahoo email would see this folder as a peer to inbox). When I select all of the messages on inbox and tell Thunderbird to move these to the local folder, thunderbird appears to indicate the task was completed. If I move a very small number of emails at a time, that does complete successfully (=thunderbird says task completed, and the moved emails do not re-appear in yahoo inbox.)

Thanks for looking at this (long) posting and (particular to moderators) if I've posted this incorrectly or in wrong place, please assist!

Dave

I had to change my Google password and I cannot get to my mail. I tried to uninstall/reinstall Thunderbird with no joy. When I try to open Thunderbird, Google responds: "The server cannot process the request because it is malformed. It should not be retried. That is all we know."

I somehow have a Spam folder stuck in Trash. This can of course be removed if I manually empty Trash, but respawns automatically when I restart TB. I've made sure that the "real" Spam folder is pointed to correctly in Account Settings.

How can I safely (and persistently) remove this phantom Spam folder? Thanks in advance.