Thunderbird Community Forum

This will make more sense if you look at the attached images first. If I create two one-hour appointments back to back on the same day--meaning the first appointment ends at the same time the next one begins (or with a 1 min gap), and then I look at my calendar in Week view, I'll see 2 full-column 1-hour blocks stacked one above the other as in the "1hr appt.png" attached. This appears to be the correct way it should appear.

But if the earlier appointment is only 30 minutes, they appear differently, as in the other image "30min appt.png". squeezed into two columns. I would like them to appear as a single, full column (as with the 1 hour appointments), which it does in the Day view.

Is this a bug? Can I change this behavior?

When an email that is part of a thread is selected the delete button changes places with archive so I end up with a bunch of archives I don't want because I get a lot of mail and delete is my favorite key to spam.

Is there a way of changing this placement behavior or do I need to hack the source and if I do need to go hacking can someone point me in the direction of the file with this evil thing.

Hello,

I'm currently using the thunderbird client to open a zoho mail account. I've set several filters (around 40) so that incoming emails are automatically redirected to the appropiate folder. If I click on the download/refresh icon (the little cloud with the downwards arrow), new email isn't received. On the bottom, a small message appears ("No new messages on the server" or something like this). You may think that that is precisely because I don't have new emails but if directly go into any of the folders and once again click on the download/refresh icon all of the emails that were supposed to go into that particular folder appear all at once (even mails that are 2 or 3 days old). Now every day I have to go into all of my 40 folders and click on the refresh button.

I look forward to your help. Kind Regards.

My computer was hacked a month ago, well... I got phished when I was sent an email that looked like it came from a client, it was a bit premature to receive a file from her but... it was very late, I wasn't at my best, and there it is. I always thought I was savvy. So. I did catch it in time to save my Google account and they didn't succeed in getting at any money, did lose my longtime alt-email address. My computer tech was able to restore most of Thunderbird, except for all my client information (18 years' worth), which I theorize is because the bad file was filtered into my client folders so those 2 main/many subs were deleted (or it could be because those client folders and a couple others missing were near the bottom of the folder tree and the tech guy's backup program failed at that point, he did try again but no luck). Fortunately I still keep a paper schedule so I was able to figure out who to talk to, and the autofill feature of TB was able to give me most of the emails I needed. [I have since learned about and have moved my Profile into my Documents in a separate folder so that my cloud backup picks it up every day (idrive). I really think it should be a LOT LOT easier to find and utilize the information on the Profile because EVERYONE should be backing that up every day, and the best way is to automate it. [My tech guy (re)installed Windows 11 Pro, I had Home by preference, have a tutorial from a trusted source about going back to Home without losing anything, because I do not need or want the architecture of Pro. But not doing that until I get my computer stabilized.]

All that said, to get to the point. When I collect email in TB (I have a gmail account using POP into TB as I do not like syncing and use TB to track), I usually have more than 200 emails at a time before I d/l into TB. Several times each d/l session, I get the following error message (header is cut off, it just contained my email address):

<<Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.>>

I have write privileges and there is plenty of disk space. I press OK and the d/l continues for a few more emails and then stops. I then press F5 again to start d/l again. Several times a session. There is no information about which folder isn't there or what is missing or causing the error.

It appears to me that the filters are telling TB to filter into a now-nonexistent folder. I did reconstruct my client folders, but plenty of room for error there I imagine (I use QuickFolders and that actually told me which of the visible tabs no longer existed). My old laptop died in the process of all this so no longer have another version of TB as a guide. I have 367 filters (been using TB since Eudora went away), but they are only searchable by name of filter, not by possibly now-missing folders.

1. I assume that this error only means the email isn't filtered, it doesn't mean it has been deleted or anything. yes? Or am I totally wrong about the meaning of this error message, and if so, please help! 2. What can I do to fix the error? With 367 filters, it would be nice if there were some way I could figure out a way to know which filter is failing, if indeed this is a filter problem?

Thank you for any input about this. I have tried and tried to figure this out.

All best wishes, --Victoria

I have just setup Thunderbird and it seems to work fine. when I login it asks me to to enter my password and if I follow the instructions, I am in, fine. But if I just cancel without entering my password 4 times I am in as well. Is there an settings I need to change so I can not open my mail without my password? I am using Windows 11

After upgrading from Mint 21.3 to 22.3, Thunderbird no longer offers me the option of setting email alerts for events. Details: - I have Provider for Google Calendar installed - I've tried adding my calendar as "Google calendar" and "On the network" but neither offers email alerts. (On the network works better for responding to invitations.) My current work-around is to go to the google calendar app on my phone and set an email alert after creating the event in Thunderbird. That works but is a pain. This worked before. I suspect it's more a configuration issue and less a Mint version issue.

Quick Filter does not return correct results in Unified Inbox (Thunderbird 140.12.0 ESR)

I'm using Thunderbird **140.12.0 ESR (aarch64)** and believe I've found an issue with the Quick Filter when searching the **Unified Inbox**.

• • Steps to reproduce:**

1. Open the **Unified Inbox**. 2. Open the Quick Filter bar. 3. Enter a search term (e.g. "maddy").

• • Observed behaviour in the Unified Inbox:**

• With no "Filter messages by" options selected, entering a search term does not filter the message list.
• Selecting **Sender**, **Recipients** and **Subject** still does not return the expected email.
• Selecting **Body** changes the results after a delay, but the expected email is still **not** returned.

If I open the **actual Inbox** containing that same email and repeat the search:

• The expected email is found using **Sender**, **Recipients** and **Subject**.
• When **Body** is selected, the search takes longer and eventually returns additional matching messages, including the expected email.

This behaviour is reproducible with multiple search terms and suggests that the Quick Filter does not search the **Unified Inbox (virtual folder)** correctly, even though the same search works in the underlying physical folder.

Could you please confirm whether this is a known issue or a bug?

Got a new macbook, did migration from the old to the new. Thunderbird failed to migrate. The icon on the desktop did, but it is not listed in the application list. Both are running the same software version, Tahoe 26.5.2. Talked to Apple, they tried to help, but in the end, they answered that it wasn't their software, so contact Thunderbird. Thoughts??? John Connell

Downloading messages is now noticeably slower on an older desktop if the 'Inbox' folder is selected/focus. If focus is changed to a different folder (i.e. 'Sent') the message downloads become blazing fast.

Deleting messages seems slower as well and I think it is related. May involve inserting/deleting entries in the grid.

End user here, with Thunderbird for years, now on several machines that I use. Keep getting the warning window about "ESR" change. I have no wish to re-install Thunderbird, on each machine, nor to go beyond the normal updates. Can't tell which "channel" I need to choose. Unwilling to just guess. Could re-install on all five machines, if that's truly necessary. Hope not. An explanation of the simplest way to dispose of this issue, is the help I'm looking for. I think I'm currently set to the lower case address. And arranged such that each machine updates to the current content.

I got an eMail notification about an upcoming update for Thunderbird snap/flatpak configs, but I don't see any entry for Thunderbird in my "~/.var/app/" directory. There is an entry for Firefox, but nothing for Thunderbird. Yet Thunderbird still updates regularly and successfully.

What should I do, in order to conform to the eMail notification instructions?

Running the command "snap info thunderbird" returns the following --

name: thunderbird summary: Mozilla Thunderbird email application publisher: Canonical✓ store-url: https://snapcraft.io/thunderbird contact: https://www.thunderbird.net/contact/ license: unset description: |

 **ANNOUNCEMENT:** The snap channels are changing. Action is required by July 21, 2026
 to stay on ESR.
 Read more about this change:
 https://support.mozilla.org/kb/channel-choices-thunderbird-snap-and-flatpak
 
 Thunderbird is a free email application that’s easy to set up and customize - and
 it’s loaded with great features!

commands:

 - thunderbird

snap-id: k1Ml1O9GzSO2QftV0ZlWSbUfQ78nN460 tracking: latest/stable refresh-date: 12 days ago, at 06:38 CST channels:

 latest/stable:     140.12.0esr-1 2026-06-16 (1155) 221MB -
 latest/candidate:  140.12.1esr-1 2026-06-29 (1170) 221MB -
 latest/beta:       ↑                                     
 latest/edge:       ↑                                     
 monthly/stable:    151.0-1       2026-05-20 (1120) 226MB -
 monthly/candidate: 151.0-1       2026-06-05 (1146) 226MB -
 monthly/beta:      153.0b4-2     2026-06-30 (1173) 239MB -
 monthly/edge:      ↑                                     
 esr/stable:        140.12.0esr-1 2026-06-16 (1155) 221MB -
 esr/candidate:     140.12.1esr-1 2026-06-29 (1170) 221MB -
 esr/beta:          ↑                                     
 esr/edge:          ↑                                     

installed: 140.12.0esr-1 (1155) 221MB -

For five or so days, when I go to send an email on my iMac, I get a message saying SMTP server won't send it. If I go to webmail, it sends, and if I use my iPhone it sends. Rogers/shaw has walked me through testing and nothing is wrong their end. Is anyone else having this problem?

Full errror: Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.

Operating system Windows 10. I have Thunderbird installed on three computers. Two on Windows 10 and one on Windows 11. I have two accounts Helen and Kevin. I have no problems with my Kevin account on the there computers. The error only occures with my Helen account and only on the Windows 10 computers. Not the Windows 11 computer. Can you fix this?

I have used Thunderbird for years with few problems. This evening when I opened it, my inbox was completely empty. I tried all of the suggestions of recovery tools, etc. Nothing worked.I logged in to google and checked my inbox there. Also empty. I recovered most of my emails from the All Mail folder but wonder what caused the problem so I don't see it again.

I changed my yahoo mail account (xxx@yahooo.com) password to counter a threat. How do I change the pw on my Thunderbird account xxx@yahoo.com? I seem to need to provide a pin, but I don't have that.

I created a user profile for IMAP and all was OK....Until I deleted the profile for POP and I lost all e-mail folders that I didn't move to IMAP. My PC is running Linux Mint. How do I get my lost e-mails?

Let me explain there is some one with the following email:

noreply@redcarpetradar.robly.com

Whatever anyone does do NOT click on their links I believe it's a criminal organization trying to get to my account.

I know many of you may not be in my situation but I'm a bit job hungry cause financial hit really hard. I clicked on link without looking and the site pretended I needed to fill a job application out. So I did without looking to see who sent it. Yes, STUPID me.

For some reason I marked as junk and it's not going to where I need to and that is trash and immediately delete it. I try and see if I can setup a rule for that. But wondering if there a extension that might do a better job. I tried to unsubscribe but these guys keep hitting back. That one sign of hackers trying to penetrate.

So now I'm wondering is there anything else I might be over looking. One think I keep thinking about is why NOT put something a tool that will do similar to mxtoolbox. With AI out there it's going to get harder to keep these criminals out of our inboxes.

I appreciate any feedback.