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Is it possible to somehow incorporate a virus/trojan checker into the software that is open source for Windows? I keep getting TONS of alerts from Mcafee that it caught viruses. Also wondering if this could be a addition to Thunderbird in a new release by incorporating something like CLAMAV into thunderbird software somehow?

very recently perhaps with a McAfee or Thunderbird update , I am seeing a message that McAfee stops a threat every time thunderbird does a message retrieval. see attachments. I have checked my outlook account directly and deleted a bunch of messages but it persists.

On Samsung S10e, after install of ThunderBird mobile, transfer of email setup from laptop via QR code gets the message shown in attachment when setting up gmail accounts. Laptop has no issues with ThunderBird accessing gmail accounts. Please describe full process to access gmail on TB mobile when this message appears. Thanks, Malc

Thank you for your help and answer. I hope I can continue writing to you in German as well?

I can't find a contact person and the name of my Mozilla account has been changed; is that normal?

Thunderbird Portable Help

Question: A number appeared after my email address, so "email" and "1954". Who is that? Is that normal?

Question: Thunderbird Developer Toolbox: Can you see in the program? Can you see my emails?

Question: Are there any Thunderbird users left who speak German?

Questions: Thunderbird Portable The archive option isn't updating? How long does the backup take?

Different Thunderbird versions display a programmed year date in the archive option. For example, 2021 in one version and 2024 in another. Is that normal? I can't change anything.

It's as if it's accessing some kind of backup and maybe even sharing it, and I don't know what's correct.

Question: Update Channel Ellipse Update Channel esr. Previously, there were different channels. Isn't another channel better? I've read that it's more stable than switching. Is that true? Information regarding the question below?

140.9.0esr (64-bit) Thunderbird is up to date.

You are currently on the esr update channel. I'm experiencing stability issues with this one.

Thunderbird, Portable Edition portableapps - 1.0 Thunderbird is up to date. You are currently on the release update channel. New Download

General Information In Thunderbird Portable, there is a help page:

https://support.mozilla.org/de/products/thunderbird

Please reply and thank you very much for your help.

This appeared on my passwords setting page on FF

After a little googling I thought the page was probably safe but in fact it's ServerNotFound

What's going on? Has FF itself been hacked?

I prefer to have VPN support no matter how I am using the internet. I would prefer that Mozilla get rid of all of the debug statements in the existing paid for VPN as it is a drag on my system. The debug issue exists on Windows 11, Android 16 and Linux (Debian 13.4).

Hello,

why you advertise a A free VPN you can trust, now built into Firefox ! when it s not free at all ?

https://blog.mozilla.org/en/firefox/built-in-vpn/ best regards

Firefox was updated. I was Hacked. Now I cannot log into my email Provider. Firefox is my default browser. How do I access my email provider via firefox browser now?

I just set up a gmail account in T-bird. I can send, but I can't receive. It keeps saying there's no email to get. I use a read-only email app called Mailwasher. I AM getting Gmail email in that app, while it's on the server.

I have gone through the settings in T-bird several times. I even checked on the web. - I entered what you see below (in both Thunderbird and Mailwasher): '"Incoming Mail Server Settings (IMAP) Hostname: imap.gmail.com Port: 993 Requires SSL: Yes Username: Your full Gmail address (e.g., example@gmail.com) Password: Your Gmail password"

I even tried changing the password a couple of times (also had to do this in Mailwasher).

UPDATE: now Thunderbird isn't logging on and wants a new password (which I've done twice already). No reason why.

PLEASE ADVISE. Kami

Today (February 25, 2026) I received an email notice, apparently from Mozilla Monitor, advising me that my "Email addresses, Partial credit card data, Passwords, and Phone numbers" had been exposed in a data breach at Canadian Tire. This email seemed legitimate (the sender was breach-alerts@mozilla.com), but since it gave me a link to login to Mozilla Monitor, my first concern was that this might be a phishing email and it would be dangerous to click on that link. Instead, I went through the Firefox settings to login to my Firefox account and from there, I checked what Monitor had reported. The Canadian Tire breach was not listed there. However, when I went to haveibeenpwned.com, the Canadian Tire breach was listed there. It showed that the breach occurred on October 25, 2025. So why was the breach not listed for me on Mozilla Monitor? And why would I have received an alert from Monitor 4 months after the breach? Was this breach alert notice actually a phishing scam perpetrated by someone using the information from haveibeenpwned.com as bait?