Thunderbird Community Forum

I changed my email password on the providers web site, my phone, tablet both asked for the new password but Thunderbird has not, why can I still send and receive email ?

And don't see a place to change the server password either, I thought it would just ask.

IMAP accounts, every time I open Thunderbird it has to authenticate and down load all my email; why isn't my all my current email available? And yes in settings I have "Keep messages in all folders for this account on this computer" checked. And yes in "Advanced" settings all folders are checked.

Thunderbird installed a new version and would not open until I created a new profile. Now all my locally saved email is missing. The only profile I can find is the new one for my email account, dated April 2026. Where is the old profile with all my saved emails? I have no email older than April 2026 in my Inbox. POP3 email, saved to my desktop computer, is gone. Please help me find them.

I am trying to add one of my Google email accounts to Thunderbird. It brings up the "Sign in with Google" window, which is normal. But instead of "Sign in to continue to Google...", it says "Sign in to continue to Mozilla Thunderbird Email". Which then generates an error: "Error 400. The server cannot process the request because it is malformed. It should not be retried. That’s all we know." I've not ever experienced this issue before; adding a Google account has always been super easy and straightforward.

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

As long as I've used TB, which is many years now, I've had no complaints. I have absolutely no desire to change to a different program.

That being said, I'm at wits' end with the recent issue of Notification Sound Alerts (NSA) upon delivery of a new message. Simply stated, beginning about 6 or 8 months ago, the NSA seem to simply work whenever they want to. I can go a month or two at a time and receive the NSA, and then suddenly one day, NSA will stop functioning on its own. This "pause," we'll call it, will last 4 or 5 months, then then suddenly begin to work again.

I have attempted every imaginable fix as recommended in this forum. There's no need to list them all, because I've made every suggested adjustment that's been recommended. But there's no rhyme or reason to why the NSA will work as programed for a period, and then decide on its own to stop working.

I don't know if this is a glitch in TB that is simply beyond my feeble attempts to rectify, or if any other TB users are experiencing the same issue. I have even gone so far as to attempt to find an Add-On that will supplement the NSA. However, none that I have uncovered, particularly those suggested in this Forum, seem to be compatible with either the version of TB or Windows 10. I understand that Win 10 is not longer supported in the forum, but please! I do not want to migrate years of email files to another program. I want to use TB but simply need to be "Alerted" when new messages hit the Inbox.

Any assistance or suggestions (except those basic adjustments that proliferate the forum, i.e insure the sound mixer is not muted, etc, etc) would be greatly appreciated and thanks for listening.

Hi,

This thread

https://support.mozilla.org/en-US/questions/1538723

This is for high contrast theme users such as the greyeve theme (universal windows 10 darkmode theme)

Which is the top google result for "thunderbird high contrast override" Has been locked and so I cannot post this reply. Since that thread does not contain a valid usable answer

Anyone coming in from google search, here is the answer

Go to general -> config editor and set the following value to 1 browser.display.document_color_use = 1

Greetings, I'm some insight on having to constantly enter my password (ISP) to download email messages. Ever since I can remember when I started Thunderbird I would enter my ISP password for my accounts once and it would download the messages as long as Thunderbird was running. I think after a Thunderbird update, now every 10 minutes when Thunderbird checks for new email messages I'm prompted to enter my ISP password. I do not tell Thunderbird to remember my password and I'm not sure what has changed to cause this, any insight is appreciated!

I donate monthly to Thunderbird and subscribe the the Thunderbird Newsletter. A few times I have received an email from Thunderbird Newsletter with no letter body to the email - only the header that says, Update Profile"

I need more information than that before I screw up something that is working fine. A two word header on an email does not provide enough information. I need to know: What profile - my Thunderbird email profile or is there another one for the Newsletter? If the email is referring to my email profile, why does it needs updating? Where to update it? Why is there no message in the body of the Newsletter email? I also would like the link to the Newsletter.

Your support articles have no information about resolving this issue. The Thunderbird Newsletter email is a "no reply."