Thunderbird Community Forum

What do I have to do to get help in this Forum? This is the second time I've posted a Question seeking help, and yet again it is being ignored. Do I have join some secret clique or group? If so please tell me?

Due to issues with upgrading from Ubuntu 24.04.1 to 26.04.1, I decided to just start from scratch with a new clean install.

After finalising the install, I copied across my Thunderbird data to the new partition, merging directories as the data copied across. But, somewhere in the transfer I lost about the last two years emails, with only emails up until 12/24 being available.

There are a lot a important emails I need to recover, and I'm guessing they're still on my PC, in the old partition, and I desperately need help to recover them.

When starting thunderbird without a working internet connection, I get an annoying amount of dialog windows reminding me for each email message box/server that the connection can't be estabilshed. The german text is „Verbindung mit Server <server> konnte nicht hergestellt werden.“ (sorry, dont have the english one..., its basically „connection to server <server> couldnt be established“). One has to click "ok" on each of these warnings and there seems to be no possibility to silence them. I mean, I know that I don't have internet (or know that the internet is buggy atm, even if I retry to get messages.) To have a message at all could be okay, but it very much interferes with reading messages (which works fine with buggy internet...) as they just pop up. I even couldn't find any settings or configuration in the configuration list searching for anything containing „dialog“ or „connect“ (which would be my/the expected place for silencing any dialogs regarding connection issues.)

How can I get Thunderbird getting to work with me again and not interfering with workflow?

Best regards

________ I searched for dialog connection / dialog internet connection and didn't find any regarding topics problem occurs on 156.0.1 (64bit) Mozilla Thunderbird Snap for Ubuntu ubuntu-snap-build - 1.0

We are not getting emails because we keep getting an error message which reads The certificate for imap.shaw.ca does not come from a trusted source.

In the Tasks tab, every task title and every due date is rendered as unreadable glyphs with stacked diacritics (see screenshot). Column headers, the mini calendar, mail and the calendar view all display normally. Because the dates are garbled too, this looks like a font or rendering problem rather than corrupted data.

Thunderbird version: 156.0.1 Operating system: Mac Tahoe 26.6 Troubleshoot Mode: problem persists. Hardware acceleration off: no dif. Different default font: [not tried]

Any ideas?

I upgraded my system to Kubuntu 26.04 LTS and started Thunderbird. The window where messages are listed was covered with Thundrbird presentation asking for donation. Only edge of one message is seen above the presentation and I cannot get to the list

It appears this method below only works for the received Message-ID, but I need to search for the sending server Message-ID in a bounced email. Or perhaps a simple plain text search of the entire contents shown when I open View Source?

I can see it there as pictured below, how do I use search to find all emails with that in the header?

Reference these instructions; https://discourse.mozilla.org/t/how-to-search-for-an-email-using-its-header-message-id/107377/2

Basically I have a variety of sending servers that are bouncing back to me and I want to know who is responsible for which messages. I can manually find that by viewing source on each email no problem, but want to search all and get all at once.

Thunderbird locked up. Followed forum advice to reload Thunderbird. Identified legacy abook.sqlite and history.sqlite files but these will not import to reloaded Thunderbird. Confirmed these files are not read only. Any advice much appreciated..

I set the app to open .jpg images as mspaint.exe and now every time I try to open a jpg I get an error message from mspaint saying "unable to create new document".

In the settings there's a list of attachments with options, but I can't find one for jpg images. How can I change the setting?

Thunderbird email says the certificate for my Shaw email server does not come from trusted source. The certificate looks fine. I cannot get Thunderbird to "Add exception". The certificate issue seems to be an intermittent problem since yesterday lunchtime. It started working again yesterday afternoon, but stopped working at lunchtime today. How do I stop this error?

I have been through all the steps and configurations and everything is set correctly but suddenly Thunderbird does not communicate with Gmail. I have tried everything. My passwords are correct and IMAP and STMP configurations are all correctly set. Now what?

Hi, I'm using Thunderbird for Yahoo Emails since many years (it's great!).

In March/April 2026 I changed the Server Settings (authent. method) to OAuth2, it has worked properly.

But since 23.9.2026 I cannot receive Emails in Thunderbird any more (only for the Yahoo account, I have another Email Account working properly in Thunderbird). Bottom text is "Message 1 of 33 will be downloaded", but nothing is downloaded after severals minutes.

My Yahoo Account in the Firefox Browser works properly, its ONLY Thunderbird (and probably OAuth2?). I have removed my Oauth2 Password in saved password of Thunderbird and generated a new one, but that does not help.

So if this issue cannot be solved, I will use another Email Program instead of Thunderbird!

Kind regards Soenke

I asked this question on Google and the AI answer although sounding logical and easy did not work.

I have a number of saved emails that I would like to add to my local folders. Any help will be appreciated.

Hi,

Thunderbird regularly unable to connect to my Google Calendar. Is there anything I can do? I updated it to the latest version today and now it said all the calendars (local, Google) are unavailable no matter what I do (unsubscribe, subscribe again and again)

And if I try to create a new calendar, the Google Calendar option is not even there anymore.

Is the latest Thunderbird broken or something I did?

Thanks,

Will

I was notified by the Cornell University IT department that "Microsoft will begin retiring Exchange Web Services (EWS), an older technology used by some email and calendar applications, starting October 1, 2026" and that my use of Thunderbird might be affected.

Is Thunderbird currently using EWS to access my email account: cal19@cornell.edu

I am moving the host of my email domain to a different provider and I want to protect my historical emails. I have set up the emails as POP3 so I should have all the emails on my PC, but in the past when I transferred my business email to a new host I didn't back up the database. So, when I put the new email host settings into outlook, it over-wrote the database and all my historical emails were wiped, and it turned out that my back up and archive pst files were both corrupted so couldn't restore them ( I have since managed to retrieve everything but it was a long process I don't want to go through again if I can help it). So I'd like to know where the database is stored so I can duplicate it first. Any help would be appreciated.

The last update to 156.0.1 changed my inbox settings.

Previously when I would highlight an email in my inbox it would show it read and show a preview in the lower frame. Now the email stays in BOLD and there is no preview frame. Where do I change it my Inbox back like it was previously? How do I change the setting so that when I highlight an email in my inbox it shows read and shows a preview in a preview frame?