I-Thunderbird Community Forum

when I am in my Thunderbird email, recently, when I go to delete emails, I can only go a few and the system stops and the top bar states "not responding" for a minute or so, and then allows me to continue. But that also freezes after additional actions in deleting emails. This slows the operation of the system and I want to recognize what it is, eliminate it and allow the Thunderbird to continue to operate the way it has done for years.

I can receive e mails but unable to open anything contained within body of e mail. e.g. P & O Cruises will send an e mail advertising cruise but when it says click on open to view - It will not open up. many thanks

I ask a person to send me a signed email so that i can send them an encrypted email. How is this process supposed to work in thunderbird? I receive a signed email, what next? Clearly, thunderbird sees the signature but does not add the public key to the contact. This is in contradiction with [page] that states: The standard way of distributing a person's certificate is to send a digitally signed email. If you have received a signed email from your correspondent, click the email to view it. If Thunderbird considers the email's signature and the sender's certificate valid, it will automatically be imported and available when you attempt to encrypt an email to that correspondent using the S/MIME technology. If you don't have a signed email from your correspondent yet, you could ask them to send a digitally signed email to you.

Note that certificates issued by CAs may have a short validity period. Certificates are no longer usable after the validity period has expired. In that case your correspondent will have to obtain a new certificate. Once that happened they will be able to send you a new digitally signed email with a valid certificate.

Organizations that operate an LDAP server may configure their server to store S/MIME certificates. If an LDAP server is configured, Thunderbird may automatically query the LDAP server if it needs to obtain a S/MIME certificate.

To review the list of S/MIME certificates that you already have, you can use Thunderbird's Certificate Manager.

The certificate shows that it is valid, yet, clicking reply gives "key issues" which shows no key available. Similarly, if I sign an email with pgp key and send it, thunderbird sees that it is signed but tells me that i need to obtain public pgp key. So it seems that signatures and encryption are completely unusable.

[Note: I characterized this question as an "Installation and updates" issue (even though it is not per se about initial installation or updates) because moving a profile involves installation issues.]

Recently I moved my TB profile, for the second time in the past few months. This time I paid closer attention, and noted several things of interest (that may touch on some questions that remain undiagnosed in this forum):

1. TB took longer to start up, as it could find none of the folders cached in folderCache.json, so rebuilt the cache from the new profile location before starting. (I only learned about this from the next effect.)
2. The "Move to" "Recent" folders list was empty; this cached list only gets rebuilt from use (that is, from moving messages manually (not via filter) to destination folders). This effect led me to folderCache.json- and also may suggest why the OP in that question could not get resolution of his problem.
3. The newly cached folderCache.json was 528 KB, compared to 365 KB at the old location -- and that, in turn, was 170 KB larger than the 195 KB size of folderCache.json at the original location. So each time the cache is rebuilt it grows perhaps 150~200 KB (size depending on the many-times-repeated path length).

What causes the file growth? Because each time it is rebuilt, TB checks through all of the cached folder paths, apparently guided by the mailboxes listed in folderTree.json (see image below). [I think TB just checks each path to see whether it is compatible with the current profile location. If yes, the path is cached for runtime; if no, the path is repopulated from the current profile location (which takes most of the startup time).] But TB never deletes the no-longer-valid paths; it just appends to what was already in the file, so that the list of cached folder paths just grows (thereby increasing TB's startup time, every time). The best way to get rid of the old stuff is just to delete folderCache.json and let it rebuild on the next startup, to reduce the time needed for subsequent starts.

Finally, my questions: In addition to folderCache.json (different timestamp in each profile, of course), there are four files which are the same in all profiles: folderCache-x.json, x={1,2,3,4} (see screenshot). These are apparently from actions prior to the profile relocations, as they are simply copied from one profile to the next, unrelated to changes in folderCache.json. Can someone tell me:

1. What actions cause the creation of folderCache-x.json files?
2. Why folderCache.json merely appends new folder paths without deleting the old ones?
3. Why folder paths are specified explicitly (fully qualified) rather than relative to the profile path?

Thanks for any pointers.

I have some questions about Thunderbird email. If an email is suspected as being 'junk' do I just delete the email and will future emails be blocked from that sender? I don't actually open the email.

Related to this, I usually 'unsubscribe' from marketing emails, but when I click on the 'unsubscribe' many ask for my email as "verification". Why? They HAVE my email to which they've just sent their junky marketing info. I don't usually respond. So how can I unsubscribe without sending my email address, which they already have. If I just see it is marked as 'junk', and I just delete without opening it, is this as good as "unsubscribing"? Is this request for my email necessary or a phishing scam?

Hi, I'm unable to send emails or reply to emails. I keep getting a window pop up that says 'Add Security Exception' Then after I close that the following message comes up

Sending of message failed Unable to communicate securely with peer requested domain name does not match the server's certificate The configuration related to must be corrected.

I have no idea what all this means. It's only just started happening since I did a Thunderbird upgrade. I hope you are able to help me please? My apologies but I'm unable to attach screenshot pictures. Thank you for your time. Kind Regards Jen

The 'Sent' file in my 'Mail' folder exceeds 3 GB (3,224,360,399 bytes) and is not being read in the TB Mail window. How can I reduce the size of this file AND save messages???

'Sent' message folder IS searchable!!!

Something changed a few weeks ago (about November 30) and since then Thunderbird will not allow me access to any new emails, nor to be able to send new emails.

Instead, I get a large pop-up window which basically says "Enter credentials: Mozilla Thunderbird Email wants to access your Google Account <my email typed here> This will allow Mozilla Thunderbird Email to: Read, compose, send, and permanently delete all your email from Gmail".

I don't want anyone to permamently delete any of my emails, nor do I want anyone sending emails from my email account (etc, etc).

SO I click deny, and the pop-up goes away - that is until I try to use Thunderbird and it pops up again.

I've been using Thunderbird for many years and never had this problem before. Do the Thunderbird or Mozilla techs know anything about this and how do I fix it, or is it a new policy (which means I will no longer be using Thunderbird)?

I have searched here some time in December but nothing suggested by other users worked for me.

I would like help creating an account through Firefox Mozilla or Thunderbird I have previously sent in inquiries about this problem I'm having with my email address h o t t i e g r l381 at gmail.com and I also thought I was creating an account with the cntrybysgrl484@mozilla.com . Now please tell how to get a account threw this service

In transferring my profile from PC to laptop, something went wrong and I lost all of my local folders, with years of emails in them. I have searched all parts of the Thunderbird folder under Roaming, and have been unable to find the folders.

The weird thing is that when I do a search for a particular subject or email that I know was in one of the local folders, the search still gives results showing the email headings. It will, however, not display the results as a list or open any of the emails.

The fact that the folders and emails appear in the search leads me to believe that they are still somewhere on my PC.

Does anyone have any advice on where they might be or how to find them?

Win 7 Thunderbird (newest version for Win 7, I believe)

Around the end of last year (2024), when I click"Get Messages" to retrieve emails I haven't downloaded yet, a window opens that looks exactly like the Yahoo log in account. As default, my email address is displayed, and I click "Next". Then the yahoo "Enter password" window opens. I am supposed to enter my password to proceed "Next". Here is where I stopped proceeding. I looked at the URL address and it says: https://tsdtocl.com/. It looked suspicious so I didn't go any further.

FYI, I have 2 email accounts. The second email account proceeds normally, retrieving emails I have not downloaded yet, automatically.

Furthermore, I installed Win 10 into a new partition and installed Thunderbird. I tried setting my email account, entered the necessary information, and after clicking "Continue", the same thing happens. A new window looking like "Yahoo log in Account" appears.

Am I doing something wrong here? Or am I safe to proceed with entering my password?

Can I expand my storage space above 10 Gigabytes (and if so, HOW?) Or can I delete emails to free up space. I have been archiving my older emails about every 3 months but that has not helped with the storage space issue. The only email that I have that is still working is DrLeeCowden@gmail.com. Thank you.

Like some other users, my TB (v134.0.1) was still slow to find and download my emails. Even though TB was lightning fast for years before this slowness epidemic started, I decided to fiddle with settings. I tried various things that seemed logical, but had no success until I changed the "Connection Security" in "Server Settings" for all my accounts from SSL/TLS to STARTTLS. My guess is that the TB devs have changed the way it communicates with mail servers about security and some can't deal with it quickly enough!

Your mileage will likely vary, so make a note of your settings before changing anything and only ever change one type of setting at a time in only one account before doing a test. I hope this helps at least some users and reduces their frustration.

Hello

Could you elaborate how I can delete mass email contact that I NEVER want to save, but you save them.

I have 4000 email saved? WHAT???????

I need to mass delete them, it makes me really hard to organize my work.

I want to do this years ago and unable to find an effective way to do, it keeps building up!!!

Please reply.

Hello,

Thunderbird Version 128.6.0 Security: 13 vulnerabilities found. Highest value 8.8 (Severe) Details: https://nvd.nist.gov/vuln/search/results?form_type=Advanced&results_type=overview&search_type=all&cpe_version=cpe%3A%2F%3AMozilla%3AThunderbird%3A128.6.0

Regards, Werner Bulich

A few weeks ago after an automatic update I ended up having Thunderbird version 131.0.1 installed, I have no idea how this happened. On opening I get a message telling me I shouldn't be using a beta version and that I should revert to the latest general release version (128.4)

Today when I had some free time I downloaded 128.4 and installed it. On opening it it says that I can't use a profile file from a later version with the earlier version. Is there a way to recover from this WITHOUT having to set up the whole profile again from scratch.

Meanwhile I have done a system restore so I am back with 131.0.1 It has not given me any problems so far. Is there a new general release version imminent that will get me back on track?

I would appreciate any help I am not a computer expert, just a user, and find Thunderbird a very good email client.

David Gould

Ich habe einen neuen PC. Ich meine daß ich alle Daten richtig eingegeben habe, trotzdem kann ich mich bei Thunderbird nicht anmelden. Woran kann das liegen? Danke für einen Hinweis