Thunderbird Support Forum

Since upgrading to version 115.8.1 I get unable to write email to mailbox . I have three email addresses in my profile. All are POP. One (from yahoo) always hangs and the other two fail intermittently. OS is Windows 10 64-bit at 22H2 level It doesn't matter if Zonealarm is turned on or off. I have over 300GB of free space on disk.

Full error message: 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 two computers, one older with TB 115.9.0 32 bit, pop. The other has 115.9.0 64 bit, imap, same email address. I have tried to merge them, but when i do the Thunderbird Import folder has zero messages and no subfolders. I also tried changing the old TB to IMAP, didnt work: "configuration problem". Any help would be appreciated.

What WordPress email setting we should use to to send WordPress transactional emails via Gmail account which has Thunderbird-Gmail App enabled. For example, using FluentSMPT WordPress Plugin?

Or, how to send WordPress transactional emails using Thunderbird mail client, on Linux OS server?

when i write a new mail i have this kind of letters , by sent or received mail, the letters are different, see my two screenshots. how can i install that the letters in a written mail are the same in each group?

Thunderbird runs slow...ie when I type an email I can easily type faster than thunderbird will accept characters....(this does not happen in other applications)...this happened about a month ago, and then stopped ( I have no idea why)...but the problem is back. I am running Ver 115.10.0 build 2024012173147. Rebooting windows 11 makes no difference.... I just tried to enter Troubleshoot mode and thunderbird stopped responding....Top line says Mozilla Thunderbird (Not Responding). Thunderbird is connected to my gmail account. ...and I run IMAP....with 'store all messages on the computer', but thunderbird wants to load every email from the server'

Any advice would be appreciated Rick

Just installed thunderbird on a new to me computer When I enter my shawmail account it does the auto install and sets up but can t access imap server. My wife s shawmail works as does my ymail and gmail. called shaw but since it works when I log in through webmail, they can't help and suggested I try this site, I've deleted it and put it back and all the numbers are correct, Any ideas? thanks

I'm about the 100th person to have this problem, so I have spent the better part of two days looking at all the threads and possible fixes. Like all the others, with no warning, my TBird stopped being able to send messages through Spectrum. It did NOT start immediately after I updated TBird to 115.9.0 (in March) but just three days ago. I have three roadrunner addresses in TBird, and one other one associated with a website I have. All have the same problem. My phone and my iPad send messages just fine.

I tried all the fixes that worked for some. They didn't work for me; I continued to get various, inconsistent Send Message Errors. I have come back to the recommended Spectrum setup for the outgoing SMTP server: mail.twc.com, Security is STARTTLS, Port 587, Authentication is Normal Password, my username is my email address. Of course the problem is not fixed.

What DID work was putting TBird in Troubleshooting mode, using the Spectrum setup above. While that is adequate, I would much rather find out what is wrong. I have Matt's 10/7/23 11:56 AM answer to someone, asking for the Troubleshooting Information. I will be glad to supply that but I need an answer to this message in order to do that. Thanks! Demaris

We have been using Thunderbird with a Cox email account. Cox has just transferred all its customers to Yahoo. I want to use Thunderbird with Yahoo. How do I set that up?

I'd been using 115.9.0 for a couple of weeks, and found it cantankerous, but manageable. Finally had the screen looking something like my old faithful 109. Today I started up Tbird, and NONE of the windows came up, except the main menu bar. I found that messages were downloaded (but I couldn't see them), and I could Write an email -- it's screen looked normal, as did the Address Book screen. I clicked on View/Folders and found that only the top "Folders" was checked. When I checked "All Folders", nothing happened, and if I left that menu and came back, the "All Folders" was not checked. Then I clicked something at the bottom of the Folders menu, and the Menu Bar disappeared. I've been unable to get it back. I enclose a screen shot of the current condition. Anything you can suggest is appreciated.

Robert Hawkins

Have two computer with same email. My Wife's computer password got corrupted and unable to get messages. I deleted TB and deleted any reference to Thunderbird in the registry. Turn off and restarted PC, downloaded new install and run and all the setting from before automatically were in place and still could not get pass the password issue. My computer does not have any password.

My wife's PC, under setting, does not have any saved passwords or a Primary password or even the "Use a Primary Password" checked. If it is checked there is nothing there. It just will not get passed the password issue being always asked when trying to "Get Messages".

How do you get rid of all the infor, setting, password requirements and to be able to restart with a clean Thunderbird install or get passed the password issue? Making my brain hurt.

I accidentally started the upgrade to 115 and aborted it. The "What's New in Thunderbird 115" now pops up every time I run the "old" version (102.15.1). It is my practice to close all running apps at night before I have the computer go to sleep mode. Consequently I have this message starting my default browser every time I restart TB. It has become annoying. There must be something I can do to stop this. I looked in all the appdata directories but couldn't find anything obvious. I also looked in the update directory but nothing obvious to me there either. Can you provide a fix for this?

I have not upgraded to 115 because too many people are having problems of one sort or another. I do not want to search for help to patch problems resulting from the upgrade process. When problems settle down a bit more, maybe then.

Give that I use TB as my desktop client to access my nyu.edu email (provided by google), and that recently I updated my password as periodically requested by nyu admin When I try to access nyu email a pop up screen come up asking to authenticate with imap.gmail.com. I click next and get a 403 Access Forbidden error (Authentication failure while connecting to server imap.gmail.com.)

Solutions I have tried: 1. Clear cookies, history and cache on browsers and TB; 2. Changed default browsers (Ffox, Ch, Edge); 3. Deleted account in TB and created it again using instructions here https://www.nyu.edu/servicelink/KB0016473 4. Accessed my nyu email on browser to check user name and password. It works. I can access the email.

Nothing seems to work. Still get 403 error. As a result I am unable to authenticate and hence use the email account in TB.

I use Thunderbird as a central repository for 5 different email addresses. Recently 1 of them stopped getting Sent messages that were created on Webmail or my Phone. I used to work fine, now it doesn't. This account is the only one I have that is set to POP3; the others are IMAP.

I'd change the settings to be IMAP but don'e see how to do that. And, I don't want to lose any messages and would like to capture the ones that have not been captured.

Any thoughts?

New TB user here, coming from Mac. I notice my emails look very 'old school' - font wise. I THINK it's because TB is showing plaintext whereas Mac Mail was showing me html, it looks that way anyway. Or maybe it's 'rich text' rather than html. I'm not sure, but it got me wondering, are there any major privacy/security risks of viewing html emails rather than plaintext? I automatically block all images in emails, always have. but looking at Mac Mail it doesn't look like i blocked html as some emails (newsletter type things) show some nice background colours and buttons etc, whereas the same email on TB is just basic font text.

I'd like my emails to look a BIT prettier, in all honesty, but not if that opens major security/privacy risks.

Would be grateful if someone could offer their thoughts on the above please

Left Mac Mail for TB (on Fedora). I am trying to replicate my signature from Mac Mail but I can't seem to format it nicely. I had some legal disclaimer text which was small font (8) and gray rather than black. I tried pasting the text into the signature box in account settings but it's just plain text. is there some way to activate a rich text/html editor to make it look a bit nicer? thanks

I have an email account with IONOS and my wife has an account. We have had these accounts for several years. Recently my wife can not send email. We are configured the same and I do not have a problem. Server: smtp.ionos.com Port: 587 (tried others at IONOS support request) Security STARTTLS Authentication: Normal password. When she tries to send or forward with a simple text (one letter or larger, it does not seem to matter). She gets the following reply: "Sending of the message failed. An error occurred while sending mail. The mail server responded: Transaction failed Reject due to policy restrictions. For explanation visit https://www.ionos.com/help/index.php?id=2425&ip=198.177.53.191&c=hd&r=0MQ4Bx-1rqmFh0x4l-00ErW3. Please check the message and try again." When trying to go to that web page, it does not exist. I have gone to IONOS support and we have both looked at the configuration and can see no differences between my set-up and hers. I have deleted all email address from her machine and reloaded Thunderbird (115.9.0), restarted her machine and added back her email. Same results, she can receive but not send. If she uses her phone, it works, and if you go to the IONOS web site and use there service it works. I'm at my wits end and can not figure it out. I have also opened an incident with the IONOS Postmaster, which I think is their second level support. Please help.

I am an e-mail packrat.... I have a pop e-mail but keep years and years worth of old e-mails (inbound and outbound) some with big attachments. My backup for the few e-mail accounts I have within my profile is approx 13 gigs. I've moved machines... and currently running Ventura on my imac.

I have to force-quit all the time to get my e-mail working again. It hangs-up.... sometimes will recover... but then... I type a few words or maybe sentences... and back to HANGING-UP again. Sometimes after a Force-Quit... it will behave for awhile. Other times... it takes 4-5-6 force quits in a row to get the program working again. Been having these issues for months... and have taken out all the add-ons etc.... HELP... pulling my hair out! Thanks

Hey there Team!

So I flipped my table because of the new Outlook update and I'm beyond frustrated.

Not only it does not show the unread email count but also stopped working for my work email, making me miss a serious meeting!

This is ridiculous!

So now I'm transitioning to Thunderbird however, my Inbox is showing the total amount of emails. This is not what I need. What I need is the unread amount of emails.

On top of this, if I minimize the email, the Inbox amount count merges with the amount count of Sent Items. This is not what I need either... What I need is to solely have the amount of unread emails.

How can I achieve solely unread email count with Thunderbird?

Please keep me posted as I'm losing my last screw over setting up something as basic as this. -Val

I just updated Thunderbird to 115.9.0 (64-bit) after many years. Took me a bit to get used to the new look-and-feel, but I do like it. Just noticed a change in how the compacting looks. With my old version, each time I did the compacting, I could see the progress down on the status toolbar, where it showed each folder as it was compacted on the left side and on the right side, a progress bar. I'm not seeing that now. In fact, I don't see any indication of the compacting progress at all. Am I missing something obvious? Thank you