Feedback for developers: Fuzzy searches under Quick Filter -please no!

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 beginnin… (tuilleadh eolais)

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?

Open 1

login denials/fail: internet banking

Hi I've used Firefox for decades. Now, since updating to Firefox 158.0 (aarch64) on my Mac Studio and a Macbook Pro, I’ve been unable to open my usual banking websites. T… (tuilleadh eolais)

Hi I've used Firefox for decades. Now, since updating to Firefox 158.0 (aarch64) on my Mac Studio and a Macbook Pro, I’ve been unable to open my usual banking websites. They still work in Safari on the same Mac & Macbook Pro and through the banks’ iPhone apps.

Have any recent Firefox security or privacy changes affected banking websites? Which settings should I check, and how can I safely allow these sites without disabling protection for all websites?

Open 2

Sent mail not put in Sent folder

I've received the following message the last few days when I send an email with Thunderbird: Your message was sent but a copy was not placed in your sent folder (Sent) du… (tuilleadh eolais)

I've received the following message the last few days when I send an email with Thunderbird:

Your message was sent but a copy was not placed in your sent folder (Sent) due to network or file access errors. (I am sure neither of those errors apply.)

It then gave me the option to "save" (I didn't get the exact wording before I clicked on "save") and I don't see it anywhere. This was a very important email and I need to find it.

Solved 6

How can I speed up my browsing experience on ios and android?

I love Firefox it's my favorite browser that I've used of all the mainline ones I've tried. But I would love to know if there's anything I could do to improve my browsing… (tuilleadh eolais)

I love Firefox it's my favorite browser that I've used of all the mainline ones I've tried. But I would love to know if there's anything I could do to improve my browsing experience on both iOS and my android. They feel a bit slow while on pc it's quick

Open

Outlook account loses connection to server after successful initial login to Thunderbird.

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, af… (tuilleadh eolais)

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

Open 1

missing messages transferred to local folder using drag and drop, yet shows as transferred in activity manager

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 transfe… (tuilleadh eolais)

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.

Open

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.

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 acc… (tuilleadh eolais)

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.

Open

Unable to write the emakil to the mailbox - JUST ONE OF MANY ACCOUNTS

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, … (tuilleadh eolais)

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???

Open 2

Managing a yahoo email account via Thunderbird (158.0) and IMAP - moving large number messages

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 f… (tuilleadh eolais)

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

Open 1

When the font size is increased, it becomes impossible to scroll on the screen where you choose whether or not to save your password in your account settings, preventing you from proceeding further.

When the font size is increased, it becomes impossible to scroll on the screen where you choose whether or not to save your password in your account settings, preventing … (tuilleadh eolais)

When the font size is increased, it becomes impossible to scroll on the screen where you choose whether or not to save your password in your account settings, preventing you from proceeding further.

Open 1

Restore a Firefox session which is NOT the most-recent one

Hello again. In 2023, when I had Firefox v110.0.1, an unfortunate hiccup caused my handful of windows and their many tabs to not appear when I restarted Firefox. I asked… (tuilleadh eolais)

Hello again.

In 2023, when I had Firefox v110.0.1, an unfortunate hiccup caused my handful of windows and their many tabs to not appear when I restarted Firefox. I asked for help here and jscher2000 was lovely and walked me through some things to do, which are discussed in https://support.mozilla.org/en-US/questions/1408206 and https://support.mozilla.org/en-US/questions/1396868.

Unfortunately, though I now have Firefox v158.0, this happened again a few days ago and I've been trying to retrace his steps the best I can with the newer version, but to no avail, unfortunately, partly because I don't now see a sessionstore.jsonlz4 file that jscher2000 referenced back in 2023.

(As I remember it, a system upgrade was taking place on my PC, and, also, a new version of Firefox {the v158.0 I mentioned} was also being installed, too.)

I found a Profiles folder (C:\Users\Bram\AppData\Roaming\Mozilla\Firefox\Profiles\p9f543mv.Default User\) that seemed to be relevant, and found a sessionstore-backups subfolder there. However, while that subfolder did NOT have a sessionstore.jsonlz4 file, it DID have files named previous..., recovery..., and (possibly connected to one of those updates), an upgrade... file, too.

When I first found this subfolder (in that "Roaming" area...I looked also in the "Local" area but wasn't confident I found anything more relevant), I copied/renamed previous... (with a timestamp from around the time of that system update, and large filesize) to previousOLD..., and the MUCH smaller recovery... to recoveryOLD, similar to the instructions in those threads. However, even if I also copied that previous... file to sessionstore... (to match those earlier instructions), Firefox would launch but with only the most-recent tabs (i.e., the Advanced Preferences {about:config} tab along with about:support {to provide Troubleshooting Information}) showing, as I'd launched them as part of my efforts to restore the session, and nothing else.)

I have "healthily-sized" recovery... and upgrade... files with the same date/time-stamp and filesize, though my efforts to try to get Firefox to open correctly have removed a similarly-sized previous... from that folder unfortunately -- hopefully the fact that recovery... and that upgrade... file have similar sizes mean they might(?) be valid substitutes for previous... should one be needed.

I hope that this described my situation well, but am happy to answer any questions you might have about it to the best of my ability.

Clearly, Mozilla updated some Firefox characteristics in the intervening three (3) years but I'm not sure how to adapt the new set of filenames to those previous instructions although, as I wrote, maybe one of those larger files will end up being what Firefox uses to try to restore everything...I just don't know what to do with it (i.e., what to rename it and/or where to copy/paste it) in order to make that happen.

Can you please offer some advice in this regard?

Thank you very much, Bram Weiser

Open

I had to change my Google password and now can no longer get into Thunderbird.

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:… (tuilleadh eolais)

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."

Open 3 1

Gmail is not moving messages to subfolders

I drag messages from Thunderbird's Sent folder into subfolders under Thunderbird's Gmail account but when I log into Gmail directly the messages have not moved out Gmail'… (tuilleadh eolais)

I drag messages from Thunderbird's Sent folder into subfolders under Thunderbird's Gmail account but when I log into Gmail directly the messages have not moved out Gmail's Sent folder even though the tags show the subfolder where they should have been placed. What can I do to have those messages appear in subfolders as they do when I am in Thunderbird?

Open 1

AOL setup on MX Linux... fails authentication

I have multiple email accounts on Thunderbird (on MX Linux)... att.net, gmail.com and aol.com While traveling without my computer, i had to reset my aol password on my ip… (tuilleadh eolais)

I have multiple email accounts on Thunderbird (on MX Linux)... att.net, gmail.com and aol.com

While traveling without my computer, i had to reset my aol password on my iphone.

Now that I'm back at my desk, and being unable to find how to change the aol password on Thunderbird, I deleted the AOL imap account and have tried much of today to add a new AOL account.

In the past, I could create an 'app password' within AOL (browser) and use that password in Thunderbird... but that is no longer working.

Any guidance/suggestions?

I am running the latest Thunderbird version 140.17.0esr (64-bit) available in my MX Linux.

Solved 8

Microsoft 365 tab keeps poping up sometimes multiple windows open, how do I stop it?

The Microsfot365 tab keeps opening up in my browser, multiple tabs will open there is no time frame between. Sometimes one will open, followed by a tab every few seconds.… (tuilleadh eolais)

The Microsfot365 tab keeps opening up in my browser, multiple tabs will open there is no time frame between. Sometimes one will open, followed by a tab every few seconds. Sometimes it's a few mins between the tabs opening. Two have opened since I opened this window.

Open