Thunderbird Community Forum

I am being flooded with SPAM emails as of Jan 1, 2025. I mark them as JUNK and Mozilla seems to not understand they are junk and continues to fail to block them. Also, ALL of my incoming emails are now being delivered to the TRASH folder instead of to the Inbox folder.

Headers are inconsequential, compared to the actual message content, I'm sure everybody will agree!

But on Thunderbird, recently, the headers take up almost HALF of the available space on the screen!

I have tried everything to reduce the message headers to ONE LINE (that is all it needs) but nothing works!!!

Have a look at FoxMail (screenshot below)! Compare it with how my Thunderbird looks (screenshot below)!

These are actual screenshots of what my entire screen looks like, with Thunderbird and FoxMail.

Foxmail has clean, simple, one line headers, with the message body taking up the maximum viewable space on the page! Thunderbird is almost 50% WASTED screen space!!!!

BTW the add-on / extension "Compact Headers" does not seem to work with the latest versions of Thunderbird.

Thank You!

My Inbox showed no messages the last time I started Thunderbird (until Thunderbird started to download new messages). I looked on the C: drive under Profiles, and the Inbox showed 0 KB, when a backup from 10/17/2021, was 1.67 GB (1,753,217 KB). I am not sure how this happened. I think there were Thunderbird updates for a couple of days before I noticed the problem. I had been having trouble with Windows 10 updates, and saved files on an external hard drive on 4/20/25 to back them up, but by then, the Inbox file in my Thunderbird profile showed 0 KB. I am using POP to download emails. Is there any way I can get my emails back? Are they saved somewhere else? Thank you in advance for your help!

After update 138.0.1 my profile is not "opening" emails.

I can see that im getting emails, i can see that i can send and make new emails, but the emails when i either click or double click them are "white".

I even tried reading the "source code" it shows nothing. I even tried going to the beta channel, but no avail, the issue persists.

Is there a cleanup, any file to delete? something?

I am having a problem with my thunderbird email client. There was an update to the program over night and now when I load thunderbird it is unable to show me the content of emails in any of the folders. I can see the emails in the list and all the folders are shown in the folder tree on the left. Howevr I am not able to access the content of the emails. My thunderbird profile folder is on a network share, this fileserver is a windows based machine. If I copy the profile to my local machine the profile works correctly and I am able to open emails and view the contents. It is only when my profile is on the network that I cannot view the contents of the emails. I ran thunderbird in safe mode and this does not resolve the situation. I have tried to repair the folders but this did not work. I deleted the .msf files but this also did not work. I ran the thunderbird debugger and then tried to access an email, the debugger stopped on the follwing exception: NS_ERROR_XPC_BAD_CONVERT_JS: Could not convert JavaScript argument arg 0 [nsITreeView.setTree]. What could be the problem with my emails?

Emails from a number of emails are going into my junk folder that should not go into it. Even when I mark each email as "Not Junk", it continues to grab emails that it shouldn't. This has been going on for a long time and list of Non-Junk emails going into the Junk folder is increasing. I cannot find how to fix this any where on your website.

I am not a techy of any sort, so don't want to change any thing I shouldn't.

Maybe the easiest thing to do us just shut down the junk grabber. I'd rather do the choosing my self.

Thanks

Steve Powell

Dear All

Unfortunately Thunderbird crashed and deleted ALL my emails in my inbox, decades worth, and nothing in deleted folder. Same when checking on webmail. Sent, drafts, etc still have the emails present.

Oddly only some accounts were affected.

Please let me know if there is any way to recover the emails. This happened less than 35mins back.

Greatly appreciate any help.

FYI I tried the below but since missing on webmail as well I dont think this helps as when I check the file size is very small:

hunderbird stores your emails locally in a profile folder. Here's how to find it:

Open Thunderbird.

Go to: Menu (☰) > Help > More Troubleshooting Information

Scroll to "Profile Folder", and click "Open Folder" (on Windows) or "Show in Finder" (on Mac).

Once inside:

Navigate to: Mail > [Your Mail Server Name] > Inbox or for IMAP: ImapMail > [Your Mail Server Name] > Inbox

Look for files:

Inbox (no extension) – this is your actual email data.

SAB. Things were smooth for 7 years. Now with latest 430/25 TBird update and some 1 May 2025 phishing attempts through email, I cannot connect with AT&T. I can view my email on the connect ATT site, but cannot get the messages to download to the Tbird email client. AT&T claims that since I get the mail through their web page site, the problem rest in TBird/Mozilla??? Thank You A mozilla supporter, Dennis Giba, Westmont IL

When I downloaded Thunderbird, all the folders from my e-mail account downloaded; but, I could not move a message from the Inbox to a folder. Today, when I opened Thunderbird, all my folders disappeared. Please advise. Thanks, Dan

Hello, All of a sudden when turning Thunderbird on, I have found that all messages in my Inbox have gone ( except a few for last day or two). Looking around Thunderbird I have found all Inbox emails have bee dumped into my Trash folder! Please help - how can I get emails back where they belong and get Thunderbird back into working order? Very grateful for any help' Thank you, kindest regards Brian Benger PS where will I get your reply if my email not working??

I have sent pictures from my phone to two people and asked them to send them back, The email with the pictures dosent appear in my email. I can send and receive email from both people, just not the ones with the pictures.

Dear team

I am facing a strange problem while replying or forwarding the email using Thunderbird. It always seeps displaying sending message box. However, the message is actually sent by the Thunderbird. When I cancel, after several trials, the message box will go. Pl help. I am having this problem since version 115 and presently I am on Version 136.0 64 bit.

Screenshot is enclosed for ready reference. I have done clean installation also but the problem remains. Pl help.

I'm 65 years old and I've been using Thunderbird for 30 years as my main email client. Now we've reached version 138.01. I have realized that the true power of TB is the addons developers' community. Why I'm saying this? Because in reality TB out of the box does not offer any basic but fundamental functions. I'll explain myself. On every TB update there is only correction of code covering TB malfunctions as if Mozilla developers are unaware of users' needs. Now we have the new version but with these fundamental problems i.e. 1. Import/Export tools does no cover full backup/restore functions covering all folders including Local folders content. 2. Lack of internal function to remove the duplicates emails. 3. Lack of full language spelling correction tool when composing an event in calendar. 4. Lack of profile images for all incoming emails. 5. Lack of full functionality of search function ( similar to the addon Expression-Search NG) 6. Lack of internal mail merge function. 7. Lack of more exlicit rules for the creation of filters. Why we have to wait any developer to develop an addon in order to cover TB non existent functions? I'm really tired of waiting and it's time for me to get off TB train and turn to other email clients which respect users needs. This post expresses my disappointment towards Mozilla foundation developers and I dont' expect to receive any comments from other users. The only thing I would like to see is whether other users agree /disagree with my comments. Nobody would like to see that Thunderbird covers only the 0.21% of the market share of all email clients. Our expectations as users would like to see TB only to gain share and not to lose.

My thunderbird keeps popping up the "send message Error" . Please kindly check the attached photo. I push the OK. It will disappear. But it will pop up again in a few minutes. But acutally, I did not send the mail to the nominated Email address on the popping window. It keeps poping up my system. Could someone help me for this problem?

For a week, I have not been able to send any emails through Thunderbird.

This is the only day that I have been able to delve further into the problem.

If I send an email, this is the response that I get after sending. Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.gmail.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

I have contacted my main provider and they have been useless. I contacted my secondary provider and they sent me what the settings should be. I checked their info against mine and everything is correct.

I prefer Mozilla products over all others and I wish to get this corrected sooner later, I have two assignments to send over the weekend.

I would rather being doing something else that trying to figure out this problem.

I should be celebrating or mourning the passing of my wife 3 years ago, than trying to figure out what is wrong.

One thing I did do was to go to the Mozilla website and download Thunderbird again in case there was a conflict somewhere in the system.

Thanking you in advance. K

I made a mistake/didn't read the instructions carefully and I used the Thunderbird Tools/Export to make a backup of the profile folder in Windows 10. It's possible I didn't see what size the backup profile actually was. I installed Linux Mint Cinnamon 21.3 on the laptop and wiped out the Windows OS in the process, so I have no recourse to the original TB files. I cannot use the TB Import b/c file is too big. When I try to unzip the profile backup, I get an error message saying "an error occured when loading the archive" so I can't unzip the profile backup to import smaller pieces using the TB import tool. Is there any fix for this or have I lost all the previous email? The profile backup was of a POP3 setup, so the old email isn't on the provider server somewhere. Thoughts? Thank you!

Hi, I've been having troubles receiving my Bill emails from Slingshot pwr, ph and internet provider. Is there any way they might have been blocked? It's only from their No Reply team, when it's time to pay, I have no problems receiving mail from any other contacts. I suspect the problem is from their side, as I do get their Customer Support emails, but they are saying different. Cheers.

Hello all, since a couple of weeks and, after year of use, the add-on Mail Merge crash… even delete the email. Please, any help to fix it? I belive crash when "send later" active, not in "send now". Thanks in advance, Asis