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Good morning,

I’m reaching out because I’m having trouble with my Thunderbird email and need some assistance.

I was using Thunderbird without any issues before, but now all my old emails have disappeared. I can still receive new messages, but I’m unable to send emails like I used to. I also can’t recover or view any of my previous emails.

It seems like something may have reset or become corrupted, and I’m not sure how to restore my old messages or fix the sending issue.

Could you please help me get Thunderbird working properly again and recover my old emails if possible?

Thank you for your support.

Dee

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.

I have an hotmail.com account with no problems whatsoever while logging into Apple Mail, G-Mail etc. but when it comes to Thunderbird it does not let me login. I tried to login first to outlook itself, changing the servers ports etc. but nothing works.

For refrence my current server settings are: Incoming (IMAP): Server: outlook.office365.com Port: 993 Security SSL/TSL and OAuth2

Outgoing (SMTP): Server: smtp.office365.com Port: 587 Security: STARTTLS with OAuth2

I have about a dozen accounts with over 50 folders, most with a matching filter. About 100k messages, taking up about 1G of disk space. All but one account is merged under my Inbox to have fewer duplicate In/Draft/Sent boxes eating up window space. I'm using 152.0.1 (aarch64) Release branch on a Mac OS X 26. All are POP accounts on a DreamHost server.

At some point it started to show the draft message on every email, which means on incoming as well. I've had this phenomenon for years.

Recently filtering has started to not automatically run on some emails forcing me to run the filters manually. I've run the repair folder options which does not seem to make any difference.

Since switching to macOS 26 it also does not allow me to move Thunderbird child windows, they simply show up on the default location. But that's for another ticket.

After Thunderbird 152.0.1 Windows x64 lost its mind:

* my main calendar
* not allow recreation from backup data
* would not load profile

I had no option but to remove and reinstall.

Local Folders has 4 non-removeable folders Drafts - XXxxxx, Sent, Trash and Outbox that were not there in the past 20 years.

I've had issues with google and microsoft, changed passwords, now I get credentials messages when Bird tries to get email. I know its because of my password changes but can't fix it. (I edited this because I said authentification before instead of credentials)

We are undergoing an accessibility audit of all our information communication technology solutions for a local government entity. This audit is to ensure our compliance with the updated Americans with Disabilities Act Title II Rule on Web Content and Mobile App Accessibility regulations in advance of the April 2027 enforcement date.

Does an Accessibility Conformance Report or VPAT with the WCAG standards used and conformance level noted exist for Thunderbird? We are hoping to find these for Thunderbird Desktop as well as Thunderbird Mobile (iOS and Android).

Why is thunderbird constantly coming up with an authentification failure while trying to connect to outlook.office365.com every time i try to access my hotmail emails? this is becoming painful last week zero access to hotmail then worked for a few days now nothing again.

Use the X-Note addon, and has worked fine for ages, but reinstalled my system, and now the font for XNote is almost unreadable - Cursive, of some sort.. How can I change this? Thanks.

Hello.I just want to let you know,that somehow the client what i uzsdeing is forget to make undread massages to read when i takea look at them.When i double clivck on them they open a diffferent page and then they get read status.What could cause this?

I have been using Thunderbird for about 15 years. I use POP3 access to download a copy of each email into Thunderbird, and then use filters to move emails from each of multiple accounts into a subfolder under local folders. I have one account which is no longer active, but all the emails were still stored in the subfolder. Today, I went to look at the emails in this account, which hasn't been looked at for at least 5 years. When I clicked the subfolder to see the emails, I got a popup window which looked like an OAUTH access window, not the list of my stored emails. I'm afraid I didn't pay much attention to the popup window, I just closed it so I could try again. When I closed the window, the subfolder disappeared. I have no idea how to get it back, since I still want to keep those emails. Does anyone know how to get it back?

For the last year or so, and not consistently, Thunderbird will not bring in new imap messages across multiple accounts. Sometimes closing and reopening will make new messages appear. If I close Thunderbird from task manager and reopen it always brings in new messages. When it does start working it will keep working for 1-3 days. Restarting my computer seems to make it work for longer. Running Win 11 Pro, but have the same issue on a Win 10 Pro computer, different antivirus on each computer. Seems to be the same issue as this post https://www.reddit.com/r/Thunderbird/comments/1gxduxt/thunderbird_not_showing_new_messages_unless_i/

Hello community,

at my place of work no one can send or receive mail anmore using Thunderbird. The problem suddenly appeared last monday. No changes regarding the network or settings in Thunderbird happened prior to this.

Here's what I tried so far and things I can rule out:

• same problem appears on all devices (desktop and laptop PCs) in our office
• our work mail server is online and working, I can access everything using the webmail-interface in the office network
• new installation of Thunderbird without any profiles and fresh account confguration doesn't solve the problem
• I can connect to our mail provider and send and receive mail when using my home network or my personal phone hotspot
• I can connect to my private mail provider using Thunderbird while in the office network
• troubleshooting mode doesn't solve the issue
• renewing the internet connection on our router temporarily/once allowed some devices to receive mail
• pinging the mail server (mailserver.[workdomain].de, no specific port) via command line was successful while Thunderbird was unable to connect to the mail accounts

IMAP-Log returns the following error codes:

• D/IMAP URL failed with code 0x804b000e
• D/IMAP URL failed with code 0x804b001e

I would be glad if somebody could help me out. If you need any more details I'll provide them. Thanks in advance!

First this is an installation on a PC. My local folders for Thunderbird are stored on an external drive. I rarely need to go to this drive, but on occasion I store a temp file for use on another PC. I was doing just that when I noticed a large number of SBD folders and MSF files there. For general description, on that drive I have local folder for Thunderbird. I also have folders A through Z which have nothing to do with Thunderbird, just other misc. folders for temp use. Thunderbird has gone through and created a second folder for each folder A through Z and an MSF file for each folder. Each one of these SBD folders has a sub SBD folder for each file that is in the original folder and an MSF file. Is it safe to delete all of these folders since they are not any part of emails. Why and how to prevent this from happening to stop clutter in my primary folder. Thank you for any advice and help.

Over the last week or so, I have received an enormous amount of scam, but no matter how many times I "train" the filter, it doesn't work.

I have just received another 3 from this site: mid:02guhjkj6-ABMcSHN6Or-JiC-000000@eu-central-1.amazonses.com, which claim to be from Madasafish Security>security@qi9adgongzenElptrum.de

I have tried on several occasions to follow the manual instructions how to deal with the spam, but I find it so log-winded that my non-techie brain, which is not wired for these kind of things, gets tired and I give up. If anyone has a more intuitive approach how to deal with this, I would be very appreciative. I have marked sites multiple times as spam, but the spam control ignores me!