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I receive the following error message: Not enough disk space to download new messages. Try deleting old mail, emptying the Trash, and compacting your mail folders and then try again.

I get the message when I want to download new emails. The suggestions to fix the problem DO NOT WORK. I cannot compact, the Trash is empty and I know there is GB's of space on my C: drive, which contains all Windows software. What to do?

I am using Protonmail with Thunderbird. In my Protonmail web account there is nothing in ANY folder but the very few I am currently keeping, including All Mail. The same folders and messages are represented in Thunderbird folders. However, in C:\Users\username\AppData\Roaming\Thunderbird\Profiles\wiu0xbpg.default-release\ImapMail\127.0.0.1, the All Mail folder contains all previous messages, including deleted messages, are still present. When I delete a message, I want it deleted. As can be seen in the attached image, All Mail is very large whereas all other folders are very small. 1. How can this be cleaned up? 2. How can this be prevented in the future? Thanks for any direction in this matter.

j'ai ajouté à thunderbird mon compte de messagerie infomaniak . l'intégration s'est faite correctement, mais je ne peux pas envoyer de mail à partir de thunderbird infomaniak sauf si je remplace le serveur sortant mail.infomaniak.com par smtp.gmail.com. quelqu'un sait ce qu'il se passe?

I created a Primary Password for the Firefox on my Laptop. I must have written it down incorrectly because Laptop Firefox doesn't recognize the Primary Password when enter it.

Since Laptop Firefox doesn't recognize my Primary Password, I am unable to log into any websites *on my Laptop*. Even if I enter the user name & password manually (vs. trying to use the saved passwords), the Laptop Firefox just asks for the Primary Password.

I am able to access my Firefox account on my Desktop PC and my phone. All three of the devices (laptop, phone, desktop) were being synced, but I turned off the sync when this problem began.

I have read on the Mozilla site that if I have forgotten the Primary Password, then I can "reset" it, however this means I will lose all of my user names and passwords.

I have also read that if I have forgotten my *Account Password*, then I can use my Recovery Key to reset it. >>Can I use my Recovery Key to reset the Laptop Firefox *Primary Password* without loss of data?

I found the place to reset the Laptop Primary Password, but did not click it because I was afraid everything would be deleted when I clicked "Reset".

>>If my Recovery Key cannot help me reset the Laptop Primary Passwor, does that mean I will lose the user names/passwords for the entire account across all of my other devices (phone, desktop PC)

>>If I Uninstall/Reinstall the Laptop Firefox App, would that eliminate the Laptop Primary Password requirement? In other words, if I did a fresh reinstall of the Firefox app on my Laptop, & then tried to log into my Laptop Firefox account, would it still ask for Primary Password?

Thank you for reading all of this. Kristin

I can send but not received emails from my several accounts. I know there's email on some, as I can see and read them with Mailwasher.

I have noticed previous posts here with the same problem, but I haven't seen a viable solution. (I'm on a new computer since last week.)

Running Thunderbird 140.8.0esr 64bit Windows 11 Home, v25H2 932GB storage 32GB ram i7-13700k

Recently, I've started getting the following message every time I launch Thunderbird: "The certificate for imap.googlemail.com does not come from a trusted source."

Digging into details I get: "you are about to override how Thunderbird identifies this site" "Location: imap.googlemail.com:993" "This site attempts to identify itself with invalid information" "Unknown Identity. The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure signature."

Digging deeper into the certificate I find the issuer is Bitdefender who I use for antivirus and VPN. However, the VPN shows no effect when enabled or disabled. The validity period is 2 Feb 2026 to 27 Apr 2026

l can get email, but cant send it. Is Bitdefender at fault?

I'm stumped. What should I do???

New computer, trying to install Thunderbird. "Download" created a file called Unconfirmed 750544.crdownload which isn't executable and doesn't seem to do anything. How do I proceed to do an installation?

I'm reading this> https://support.mozilla.org/en-US/kb/thunderbird-export#thunderbird:linux:tb148 Looks great but all of my messages sit on IMAP servers and I don´t need a backup of those. I _do_ need a backup of settings, passwords, pgp keys, to move to another workstation. It is unclear what exactly is exported.

I am having trouble sending in email, i have gmail server (i am getting a time out error) i have the latest version of thunderbird i am receiving message ok, just cant send

I'm trying to switch from Thunderbird ESR (140.8.0esr) to release (148.0). Following the Mozilla support recommendation I'm running the 148.0 setup and trying to install it to the same directory. While doing so I'm asked to restart the computer. After doing so I'm required to restart setup but continuously asked to reboot the computer. is there a zip version of the installation? if not How to overcome the restart issue?

When I make a screenshot in private browsing the picture is black. With my former android there was no problem. Now I have a fairphone 6 and I can no longer make the screenshots in private browsing. Is there a solution fot this problem or do I need to switch to normal browsing whenever I want to make a screenshot?

Having a paid firefox relay subscription, can I incorporate Firefox relay masks into my Avira password management. I use a laptop under Windows 11, as well as a smartphone on Android, both using the same Avira password management software. More precise, how do I prevent a list of firefox relay masks is shown if an user name or email address is searched for/ or supposed to be provided by my avira password manager? Can I prevent that a list of relay masks is listed by inserting/deleting a check sign in what setting? Thanks in advance and Regards.

Moderator note: This question has been edited to correct the formatting.

I have used Mozilla Firefox as my default browser, for years. Recently, I used a program to clean (what it said was) junk files from my computer. Unfortunately, I did not make a rescue point. After removal of the files, several of my programs, including Firefox, has no longer worked as it once did. I was always able to go into settings to select my browser, my search engine, my home page, etc. That is no longer possible. I was wondering if I should uninstall Firefox and reinstall - or is their another easier way to repair my problem?

Any help I can get is much appreciated.