"Unable to write email to mailbox" & "Messages could not be moved/copied because writing to folder failed"

Hello, Attached are the messages I have been receiving ever since 6 October 2025. I've tried to read about fixing these myself, to no avail. (I mean, I can Read; I just c… (funda kabanzi)

Hello, Attached are the messages I have been receiving ever since 6 October 2025. I've tried to read about fixing these myself, to no avail. (I mean, I can Read; I just can't fix this.) I've tried to Compact ALL folders individually. But that seemed to do nothing. (Before 6 October, the Thunderbird window would at least "flicker" a little after compact.) Trash is empty. Tried disabling McAfee AntiVirus & Firewall. And, no, this isn't happening because I'm using McAfee; I've been using McAfee since Windows XP and Thunderbird since before it "broke away" from Mozilla. They have, until 6 October, played nice together. I really like Thunderbird so I do not want to find another email client/program/what-have-you. There are LOTS of saved emails that I cannot move/copy to "save space", so...Help? Please?

Thanking you in advance, tonyg

P.S.-I am not computer illiterate. But, slow, easy to follow, non-BIOS changing, step by step directions would be preferred.

Asked by Anthony G 2 ezinsukwini ezidlule

Last reply by Ed 51 imizuzu edlule

I want a confirmation prompt after clicking "Send"

When sending an email using the keyboard shortcut, the settings tell me that I can set TB to give me a confirmation prompt. Why can't I get a confirmation prompt when us… (funda kabanzi)

When sending an email using the keyboard shortcut, the settings tell me that I can set TB to give me a confirmation prompt. Why can't I get a confirmation prompt when using the Send button? Is there any way to make TB do that?

I set TB to run a spell check before sending, and that gives me an opportunity to cancel the Send operation. But it only works if the email contains a misspelling.

Thank you.

Asked by Purebeads 3 ezinsukwini ezidlule

Last reply by Ed 55 imizuzu edlule

cannot get into thunderbird directly without going thru Webmail

My Spectrum password was changed and now I cannot get direct access to TB. For some reason TB is not linking up with Spectrum password. I get a popup panel saying "Login … (funda kabanzi)

My Spectrum password was changed and now I cannot get direct access to TB. For some reason TB is not linking up with Spectrum password. I get a popup panel saying "Login to server Mail.TWC.Com with username jomar159@hvc.rr.com failed" Retry Enter New password Cancel I have 2 accounts on TB 1 is wmarks1 and the other is jomar159@hvc.rr.com HELP

Asked by wmarks1 5 ezinsukwini ezidlule

Last reply by Ed 59 imizuzu edlule

Open Firefox in previous active tab?

I may have asked this before, When I launch Firefox, it opens the tab to the right of the active tab in the previous session. When I close a tab, it opens the tab to th… (funda kabanzi)

I may have asked this before, When I launch Firefox, it opens the tab to the right of the active tab in the previous session. When I close a tab, it opens the tab to the right.

Am I wrong, or is that precisely the opposite of what you would expect or want?

Can someone please explain the logic of this? Is there anything that can be done about it?

I have this addon Select After Closing Current. Can I get some advice to set it up to work?

Also, why are there two product pages for it? link text

Asked by noel_envode 1 inyanga edlule

Last reply by TechHorse 1 ihora elidlule

IMAP connection

Hello, I have a problem with Thunderbird that I don't understand and can't solve. Thunderbird can't connect to my IMAP account on the remote server perfectly even after a… (funda kabanzi)

Hello, I have a problem with Thunderbird that I don't understand and can't solve. Thunderbird can't connect to my IMAP account on the remote server perfectly even after a clean install. Incoming emails are downloaded, but only 82 out of 5600 outgoing emails. All login details are correct, I tried STARTTLS settings on the correct ports, but there is no change. I see in the Activity Manager that the connection between the server and the client is lost several times a minute. There is no network error, both I and the internet service provider have checked the connection. The client is running the Win11 operating system.

Robert

Asked by paksirobi 1 usuku oludlule

Last reply by Matt 1 ihora elidlule

Firefox Context Menu - Unwanted Navigation Images are Showing Again

Hi All, I was using the following CSS to hide the navigation images and show only text labels on the context menu for the Back, Forward, Reload and Bookmark Page menu op… (funda kabanzi)

Hi All,

I was using the following CSS to hide the navigation images and show only text labels on the context menu for the Back, Forward, Reload and Bookmark Page menu options...

/* Content Area Context Menu - Navigation Vertical Text */
#context-navigation,
#context-navigation > menuitem{
  flex-direction: column !important;
}
/* hide images */
#context-back image, #context-forward image,
#context-reload image, #context-stop image,
#context-bookmarkpage image{
   display: none !important;
}
/* show text labels */
#context-back:after, #context-forward:after,
#context-reload:after, #context-stop:after,
#context-bookmarkpage:after{
   content: attr(aria-label) !important;
   margin-inline-start: -19px !important; /* this pushes navigation text items to left, aligned with other menu items below */
}


It worked up until a couple of versions ago, but something has changed, and my CSS is now broken, and those navigation icons are back.

My context menu now looks like the attached image below.

Any help with showing only text labels on this menu is appreciated.

Thanks.

Asked by Slouch 2 ezinsukwini ezidlule

Last reply by jscher2000 - Support Volunteer 2 amahora adlule

Can't sync Firefox Beta on Android and Windows 11

Instructions everywhere say to open Firefox on mobile, select the options menu, and select "Sync and save your data." However, "Sync and save your data" does not exist. I… (funda kabanzi)

Instructions everywhere say to open Firefox on mobile, select the options menu, and select "Sync and save your data." However, "Sync and save your data" does not exist. I cannot sync my passwords from mobile to my desktop.

Asked by ryannlusk 4 amahora adlule

Last reply by Paul 3 amahora adlule

support.mozilla.org login

Seems like every time I come here, not only do I have to re-login, but also do the 2-step verification. Is there any way to avoid all this? I understand the need for se… (funda kabanzi)

Seems like every time I come here, not only do I have to re-login, but also do the 2-step verification. Is there any way to avoid all this?

I understand the need for security precautions, but my circumstances don't require 2-step verification or the re-login.

Asked by noel_envode 3 amahora adlule

Last reply by Paul 3 amahora adlule

History, shortcuts and recent history gone and no longer being collected

After a re-start, my Firefox browser on a Dell laptop lost all history and has since also not been collecting websites visited. When opening a new tab, the shortcuts and … (funda kabanzi)

After a re-start, my Firefox browser on a Dell laptop lost all history and has since also not been collecting websites visited. When opening a new tab, the shortcuts and recently visited websites are also gone and no longer being collected. My CCleaner recently updated itself to a new version but I unchecked the delete history for Firefox (which treacherously is clicked by default - I fell into that trap before). Happy to blame the new CCleaner but that would not explain why history is not being collected now - to me the fault seems to lie with Firefox instead. Another possibility that went through my mind: Is Microsoft sabotaging users of Windows 11 to force them to buy new? PS: Under "Privacy", "History", the setting is "Firefox will remember history", as it always has been and should be. But it has forgotten all previous history and it is no longer collecting any new history either!

Asked by w.preiser 3 ezinsukwini ezidlule

Last reply by jscher2000 - Support Volunteer 3 amahora adlule

Thunderbird slow startup on MacOS

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has alw… (funda kabanzi)

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has always been a slow starter. Can I change any setting to remedy this. At the moment I have two mail accounts configured both Gmail.

Asked by LesJen 1 usuku oludlule

Last reply by Mapenzi 3 amahora adlule

Can't keep my tabs on Firefox daily

I can't keep my daily tabs open on Firefox. Every day, I have to put them back up manually. What's going on? I was using Waterfox and it seems to be hacked, now Firefox i… (funda kabanzi)

I can't keep my daily tabs open on Firefox. Every day, I have to put them back up manually. What's going on? I was using Waterfox and it seems to be hacked, now Firefox is not reliable either.

Asked by SUNSHINE47 8 amahora adlule

Last reply by Paul 6 amahora adlule