Thunderbird Support Forum

I have a notice in the bottom right of my Thunderbird screen stating 103mb of 110mb IMAP total (93%) has been used.

I presume there will be consequences should this reach 100%!

My mail server is showing no issues of quotas being reached.

Is this an issue that relates to Thunderbird quotas?

Can anyone advise how I can reduce the 103mb total that is being shown?

Many thanks in advance.

I have set toolkit.legacyUserProfileCustomizations.stylesheets to TRUE in both Thunderbird and Betterbird.

I have created the file C:\Users\MYNAME\AppData\Roaming\Thunderbird\Profiles\r2v9k1zw.default\chrome\userChrome.css

I have successfully entered css into that file that work as expected in Thunderbird v115.12 and has for the past several versions. But I have NOT been able to do anything in that file that works with BetterBird. In fact, using the inspector, I don't see userChrome.css even being loaded! I have also tried starting the file with '@namespace html url(“http://www.w3.org/1999/xhtml”)' but that makes no difference either.

How do I get BetterBird to recognize the userChrome.css file?

Good morning. I have been unable to receive e-mails since 30/05/2024. Has the fact that I received an e-mail message from "Mail@voice" <mboudreaux@firmgroupagency.com> on 31/05/2024, got to do with the problem. I would be grateful could help solve the problem. Thank you. Emyr Davies.

First I got problem.with my laptop. I went to a service shop, but the technician caused me to loose the old files of my e mails. I seriously need help to get my old e mails accessible

My outgoing email stopped working suddenly. Incoming email works fine. I sent an email with a large attachment. It sent but after that I could not send anymore emails. I checked my password and server settings nothing has changed except I can't send email. I get a pop up window that asks for my password but after entering my password and hit enter I get another pop up window that says login failed please enter new password. The password works fine when I go AOL mail and enter it.

It has stopped working. Starting 2 weeks ago, Thunderbird keeps saying "Login to server imap.aol.com with username stuart_jones@verizon.net failed." I don't know what to do.

Thunderbird version 115.12.2

How can we keep the month calendar visible in the Today Pane?

The option mentioned here seems gone: https://support.mozilla.org/en-US/questions/1420812

Hi

I'm trying to link my business email with Thunderbird but it failed to connect with my server .

Attached is a screen shot

Thank you Marwa

I have just altered my Hotmail settings in Thunderbird to take account of the Microsoft OAuth2 requirements. I can still send from Hotmail but cannot receive (download) incoming messages.

When I open Thunderbird, or check for email, I see the text "******@hotmail.com: Host contacted, sending login information......." at the bottom but no messages are downloaded, and eventually the text disappears (I know there are messages waiting as I can see them using the Outlook app)

My server settings are; Server type : POP Mail Server Server name: pop-mail.outlook.com Port: 995 User name: ******@hotmail.com Connection security: SSL/TLS Authentication method: OAuth2

I have tried restarting both my PC (Windows 10) and Thunderbird, but the problem persists. Help please!

Hello,

When the primary password window opens and I click Cancel, can that window close AND can it prevent Thunderbird from opening?

Example: what if I bring my pc to a repair shop and they open thunderbird and click Cancel on the primary password window. They can See my previously viewed email. I do not want them to see those. Clicking Cancel AND closing Thunderbird would prevent them from seeing emails.

Could this be a future enhancement?

Thanks

Jim

I have always kept old emails in the LOCAL folders for security reasons not having all my info on a server somewhere that could be comprimized/stolen/scammed. I am now on Yahoo and have heard security is not the best so I am not sure I want to put all these files on their servers. Now, however, as my PC is getting old I am afraid it could crash, I assume I would loose all those emails-correct?. If I go into my TB Profile and find the Mail/Local Folder I can copy and paste it to a flash drive. Would that be the recommended way to back up? If I did this process a month from now would it, like a file, ask me to overwrite what is already there and add anything new? If my PC did crash, could I do the reverse and copy and paste that flash drive Local folder into my new TB profile? Thank You.

System specs below. Thunderbird is set with 1 account: A paid Yahoo email, with a LOT of messages (well over 36K), using IMAP (Yahoo only lets the most recent 10K come down via IMAP, sadly). Most emails do download and are correctly rendered. But around 10%, starting usually a month or so back from the high water mark of last update, show email source code (text of headers, mimeparts, etc.) for a totally different email than the one highlighted (a few days later, different sender, etc.) Checking the message on Yahoo, it renders correctly. There is no pattern to the corrupted messages: they can be from mailing lists, company marketing mails, an alert from my local town, whatever.

Once the error occurs, it is consistent across Thunderbird shut-and-restarts (still showing same wrong email source as before). Emails to either side (earlier and later) render properly in the message pane.

Double Clicking the message to it's own child pane renders a pane with Subject and From as blank, and the same email source text for a different email. Forwarding the email puts the email source code in as text (I was hoping the act of refreshing and reformatting might grab the correct content, but no).

Doing a Repair Mailbox (which seems to mean "download headers again, then download all the mail again" does seem to correct for a time (including the previously corrupted emails now rendering correctly)... but within a day or two, a new crop of messages will be corrupted, and the dance starts again.

Windows 10, 64 bit. Norton 360 set to exclude all mailbox directories. Thunderbird 115.12.2 (64-bit), though this has been happening since 110. No plugins, no extensions.

Are there diagnostic logs or other info I can share that can help us figure this out? I really like Thunderbird, but it's just unusable here. Outlook, Apple mail, other tools don't seem to have this problem.

Hello- I want to add some verbiage before my business card that I have add to my Signature. see image - How do I include the Warm Regards, name, number? I did add on "advanced composer" but cannot find how to use it in FF Thanks for the help

I've been using Thunderbird for many years with no issues. I opened it today on my laptop and all my accounts, settings, emails, calendar items, etc. are gone. It's asking me to set up an account. I have years worth of saved emails from 4 different accounts and they are all gone. How can I get them back. I am using Windows 10.

I have received an email from Microsoft advising that from a date in September third party apps will no longer be able to access outlook email accounts. Does this mean I will no longer be able to use Thunderbird - which has been my preferred email client for many years? Thanks Nigel

Can't get out of offline mode. It happen once previous but an icon was available and got back on. Now going to settings and nothing works. Surprisingly found nothing with Google nor Mozilla support. No email; big problem.

The offline option does not give off or on but option that I don't understand.

The file at the top shows offline and there doesn't seem a way to change (no check mark).

The moderator, 10 years ago, said uncheck on life or two blue line. No such think.

Computer is connected to internet. Shut down MAC and restarted. Still OFFLINE. I must be online but cannot download my messages.

Please help

Dear Sir or Madam,

I have just migrated Thunderbird to my new CUBI desktop running Windows 11. I get security errors when I launch Thunderbird. My email provider The Messaging Company advised me to change server settings, which are now shown in the Troubleshooting Information page as account1 (pop3) pop.themessagingco.com.au:995 SSL/TLS Normal password smtp.themessagingco.com.au:587 STARTTLS Normal password true.

On launching Thunderbird I get the message Secure connection failed live.mozillamessaging.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate has expired. Error code: <a id="errorCode" title="SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE">SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE</a>

   This could be a problem with the server's configuration, or it could be someone trying to impersonate the server.
   If you have connected to this server successfully in the past, the error may be temporary, and you can try again later.

Or you can add an exception…

AND when I attempt to send an email I get warning that the SMTP server does not have a valid certificate. If I ask, in either case, to "Get Certificate" the response is that the site attempts to identify itself with invalid information.

I have "tried again later" over two weeks, and nothing has changed.

The Messaging Company is a fairly large email provider: it seems strange that its security is incomplete. However, I am not happy to just set an exception and over-ride these errors without doing all I can to check that there is not something screwy going on. I really value using Thunderbird, and The Messaging Company's advice that I should just use webmail is not at all satisfactory: I keep everything on my computer or backed up to a portable drive here.

Please: is there anything I can do or should know to fix this problem?

Best Regards, Margaret Mackisack

I would like to change my account settings for my hotmail account, but when I try to change from Normal Password under Outgoing Server (SMTP) there is no option for Oauth. Is there something I can do to enable this option.