Thunderbird Support Forum

I have seen some posts on this request but unsure if anything has been done to add/use if already there a feature to make an email account "inactive". I have several email accounts set up in Thunderbird but do not use them much but don't want to delete the account but don't want to have to have them active either. Any update on this issue is appreciated.

Hi, I've received the email below from Microsoft today.

I have 15 email accounts linked to Thunderbird mail and use up to 5 of them daily. Sometimes 'instant' communications on one or more of my accounts can be important.

Will Thunderbird mail still function in the same way from 16th September?

I apologise if this question has been answered somewhere else. I searched but could not find it.

"The safety and security of your information is top priority for Microsoft. To help keep your account secure, Microsoft will no longer support the use of third-party email and calendar apps which ask you to sign in with only your Microsoft Account username and password. To keep you safe you will need to use a mail or calendar app which supports Microsoft’s modern authentication methods. If you do not act, your third-party email apps will no longer be able to access your Outlook.com, Hotmail or Live.com email address on September 16th.

What do you need to do?

If you are receiving this email, you are currently using an email or calendar app that uses a less secure authentication method to connect to your Outlook.com email account. You will need to upgrade your third-party mail and calendar app to a version which supports modern authentication methods.

Microsoft provides free versions of Outlook for your PC, Mac, iOS, and Android devices which can be easily downloaded and connect to your email account. Using an updated version of an Outlook application will ensure you are connecting in the most secure way.

How can you set up your Gmail, Apple Mail, or other third-party mail application?

Various non-Microsoft applications will have their own steps for connecting to your Outlook.com email account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods."

I'm trying to migrate from Fairpoint to Breezeline as my provider. I need two email accounts, one for work and one for personal. I got a new work account "sort of" working. I can send and receive email with it, but it doesn't react when I click on "Get messages." The second account I can't get to work at all. I copied the same server settings I used for the first account, obtained from the Breezeline website. They are:

Username: Name@breezeline.net

Incoming mail server: mail.breezeline.net IMAP port 993 Security type SSL

Outgoing mail server: mail.breezeline.net Port #465 Security type SSL

Authentication method: Normal password

I used the same password for both accounts.

When I tried to get messages or send on the second account, the message is "Login to server mail.breezeline.net failed."

I checked the Breezeline webmail site. It recognizes Account 1 but "cannot find" Account 2. According to the Breezeline website, I can have more than one account.

Please help! THANK YOU!

When I am trying to access emails, a popup says to get certificate= imap.aussiebroadband.com.au:993 and confirm security exception. It will not allow emails to download

How can I stop Google constantly interfering with my usage of other programs. It wants me to sign -in with my gmail a/c. Not interested. Only just happened. Have been using Thunderbird (and Firefox) without any problems for many years. I feel Google is trying stand-over tactics.

Peter Olsen peteranneke@bigpond.com

I have a new windows 10 machine and have a new install of Thunderbird. Hosting email server has 2966 emails that I would like to recover. Started process of downloading them and got to 1895 when it failed with the error message "Unable to write email to mailbox" Check the settings. Tried removing the account and recreating it. Removed the 1895 emails that I have downloaded and got the same result. It seems to be broken some where between Thunderbird and the hosting mailserver as I can login via webmail and see and read the balance of 1071 emails. Techs at the hosting server company have no idea what could be causing the problem. Any help would be appreciated. Regards, Richard

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.

I use Thunderbird 115.12.2 (64-bit) with Hotmail, using a local account on Windows 10. Microsoft is introducing 'modern authentication' on Hotmail, and I want to be ready for this, but I cannot follow the guidance at https://support.microsoft.com/en-gb/office/modern-authentication-methods-now-needed-to-continue-syncing-outlook-email-in-non-microsoft-email-apps-c5d65390-9676-4763-b41f-d7986499a90d

If I try to alter my existing Thunderbird Account Settings for my Hotmail account, the authentication method for Outgoing Server (SMTP) is shown as Normal Password but there is no option to change it to OAuth2. If I delete and recreate my Hotmail account in Thunderbird, I get an error message from Microsoft saying that I cannot log in because my browser is not set to allow cookies -- even though I believe I have set both Thunderbird and Firefox (my default browser) to allow cookies.

Hi I have just installed thunderbird and I have 2 email accounts. In both of the accounts I can't find the "sent" folder. Thunderbird is showing only the inbox folder and the trash folder.

Can you help pls?

Hi, I am hoping to have two thunderbird downloads/accounts on the same computer.

ie can I run 2 separate thunderbird portals -

one for my talktalk emails

and a completely separate one for my gmail/google accounts.

I know I would be able to load the gmail/google onto my original Thunderbird account (but I would like to keep them completely unconnected)

Thanks in anticipation, HM

Is there a way to remove the "read" message bar at the top of the mail. It shows all the messages you have read, so I don't have to keep deleting them. I've looked all over and can't find anything about it. TIA Linda

Since my husbands departure, I have had the hardest time trying to access my husbands accounts. Luckily we have recovered many, but one of the most important ones is his thunderbird account. He is due to receive important information that I as his wife am unable to access. Can someone please point me in the right direction. I can be reached at [edited @gmail.com ] Thank you for your time, Chun Walls

[edited: phone# and email from support forum]

I am having trouble manually configuring an AOL email account (username@verizon.net). AOL's instructions say to manually configure the account. I tried to do that twice, once with IMAP and the other with POP.

Now, I have two email folders in Thunderbird that I cannot use. They are both empty because I get a message box that says "Login to server imap.aol.com with username@verizon.net failed." when I try to use them. When I use the same login credentials to login to the website mail.aol.com, they work.

I have to contact AOL as to why when I try to access the account with an email client (Thunderbird and Outlook) I'm getting password errors. In the meantime, how do I delete the two email folders created incorrectly in Thunderbird?

Thanks for your help.

I've managed to migrate emails from Outlook 2007 to Thunderbird 115.12.2 (64-bit). Everything was going great until I marked the messages as read. Now, I can't see the messages. I don't want that. I want to be able to archive my emails in folders -- I have the disk space to do so. How do I get my emails to appear (Thunderbird shows email counts, just can't see the messages), and fix it so that I don't lose them again?

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'm a writer. In keeping with the Law of Primacy, my first work is usually my best work (after a few tweaks). I recently had to write an email response to someone for the Darling Bride and me.

I waxed poetic and wrote an incredibly diplomatic response to a most unpleasant situation. After completing the entire message down to our signatures, I selected "File" and "Save" to make sure it was all saved in the Drafts folder. That way, I could open it on another device and read the draft to her.

Imagine my shock when I opened it, only to find that the draft stopped in the middle of a word - while I was correcting a typo - and didn't save anything after that! Frantic, I went back to the computer I used to write it, hoping the entire email was at least saved locally. Nope! The draft stopped in the middle of the message, even though I had saved the entire thing.

Perhaps this isn't high priority for a lot of users... but for those few of us, it's a critical, fatal flaw that has to be resolved. I can't even imagine that I did anything wrong: I saved the message before exiting; and opened to find half of it missing. I love the idea of Thunderbird and its privacy features, compared with the data-mining big names. But I can't afford to lose data! This was a personal response, thankfully, and not related to my work as a writer and author. However, I have to trust my email client with the data I save to it. Any hints to prevent this are greatly appreciated.

Not used Thunderbird for about a week as was away. On my return I am now getting duplicate downloads every-time I open Thunderbird on my desktop using Windows 10. I am on Thunderbird version 115.12.2. I have been using Thunderbird for a long time and this is the first time this happened.

I recreated the global-message-db.sqlite indexfile, turned off my anti-virus, compacted folders but nothing solved the problem.

However I did find a similar question on this site with a solution which wasn't exactly the same but lead me to investigate the Mail folder in my profile. I see I am getting duplicate pop.gmail.com folders (pop.gmail.com, pop.gmail-1.com, pop.gmail-2.com, etc.). I guess that is probably connected to the problem.

When I open Thunderbird I also get the message 'Connection to server pop.gmail.com was reset'.

Any help would be appreciated. I didn't want to delete any pop.gmail.com folders without expert advice.

Thank-you in advance.

When I restart Mozilla Thunderbird, my S/MIME certificate preferences under Account Settings seem to break.

When I initially select a certificate, both the common name/certificate name and the certificate fingerprint appear in the interface (see Working Settings.png). However, after restarting Thunderbird, only the common name/certificate name appears in the interface, and I cannot use S/MIME to sign messages (see Broken Settings.png). When I attempt to do so, I receive the following error message:

Send Message Error Sending of the message failed. You specified that this message should be digitally signed, but the application either failed to find the signing certificate specified in your Mail & Newsgroup Account Settings, or the certificate has expired.

To be clear, Thunderbird has no problem finding and using the certificate right after I set it—the problem only appears when I restart Thunderbird and the appearance of the certificate in the settings changes. The certificate does not expire until April 2025, so this is not the issue. The issue also occurs with another account using a different certificate that is also unexpired.

I am using Thunderbird 115.12.2 (64-bit ESR) on MacOS with Apple Silicon.

Thanks for the help with the screenshots David. Here are the 3 screenshots 1.) Error message on bottom right. 2 & 3) Incoming and outgoing server settings. Looking forward to solving this issue!