Thunderbird Community Forum

I have saved my emails in the local folders, which is in my second drive (D Drive), I added extra folders named them as per year and in those folders per month. It shows the size of each folder amount of data but, nothing is there. I notice this when my C drive got corrupted and I had to reinstall windows 10 again. I did not reformat the D: Drive because there was nothing wrong with the drive. It used to be so easy in the pass to save emails. What is happening?

Thank you for any assistants in the future.

Victor Nassar

I've been using Thunderbird happily for many years, but a couple of days ago, it started making problems. It sometimes shows only my mail address, but no folders, so I cannot get to my mails. Sometimes it shows only the folder for incoming mails, but no "sent". Or "sent" ist empty. Sometimes everything works. (I have a second mailaddress in this thunderbird app, for which all folders are present, no problems there)

I cannot receive mail from my Outlook.com account in Thunderbird. This does not appear to be a Thunderbird configuration problem.

Thunderbird 159.0 on Windows. IMAP: outlook.office365.com, port 993, SSL/TLS, OAuth2, username = full address SMTP: smtp.office365.com, port 587, STARTTLS, OAuth2, username = full address

The Microsoft sign-in window completes successfully and an OAuth2 token is issued and stored. Using the same token: 1. SMTP AUTH XOAUTH2 succeeds: 235 2.7.0 Authentication successful 2. IMAP AUTHENTICATE XOAUTH2 fails: NO User is authenticated but not connected. 3. POP3 AUTH XOAUTH2 fails with an authentication/protocol error

I also reproduced the IMAP failure with a raw IMAP connection, outside Thunderbird. A brand-new Thunderbird profile still fails for this Outlook.com account; a Gmail account in the same profile works normally. Thunderbird is up to date.

Outlook on the web works. IMAP is enabled in Outlook.com settings (toggled off and back on). The same IMAP failure happens on two different networks.

I have already contacted official Outlook.com support. They said IMAP is outside their scope as long as Outlook.com works in the browser, and directed me to Feedback Hub.

Is there any Thunderbird-side workaround, or any known Outlook.com IMAP OAuth2 bind issue and recommended next step?

I apologize in advance if I have sent out anything suspicious below. I have a question regarding the Thunderbird-Gmail transfers.

I have read about the article ([[Thunderbird and Gmail|https://support.mozilla.org/en-US/kb/thunderbird-and-gmail]]) regarding data transfers to Thunderbird from Gmail. I was wondering if it's possible to transfer all Gmail data of that email address (i.e. examplename@gmail.com) to the different email address for Thunderbird (i.e. abcde@thunderbird.com), rather than using the same email address that I use for Google's Gmail?

If so, should I follow what's described in the above article link, or is there a different way?

Also, what should I do with the websites that I log in to, such as social media, healthcare, business-related login information, etc. between email addresses from Google's Gmail and Thunderbird? I really don't want to mess anything up on any of my important personal stuff.

I am trying to add an Proton mail account to Thunderbird using the Proton Mail Bridge (PMB). In the PMB guide it is recommended to uncheck Account Hub in the Setting>General. The problem is that the Account Hub still pops up when trying to add a new mail account - it simply refuses to go away regardless of several restarts of both the computer and the mail client!

I run an old imac with ventura 13.7.4, mostly i use my email prog from my server, but i can't get links etc. When i switch to Thunderbird, much of the time thunderbird just sits there, saying it's connecting, but it's not. i will dump it soon and try something else, i think. Sometimes it works.

I think i am running TB 159.0. I haven't the faintest idea how to access the TB app menu, but this is what it says on my app menu.

I can't upgrade my OS, it's a miracle this thing works at all any more. Yay for old geeks!

After many years I have recently been receiving intermittent server refusals, as many as 12 to 15 per day, on mail.twc.com with Spectrum. After confirming incoming and outgoing server settings, Spectrum advises that the problem is with Thunderbird.

When using the retention policy "delete all but the most recent x messages" on an IMAP folder on Thunderbird 160, I am seeing messages get deleted from Thunderbird but they are still present in webmail.

When using the retention policy "delete messages more than x days old", the messages get deleted from both Thunderbird and webmail as I would expect.

I have restarted Thunderbird and run a repair on the folder, but nothing changed.

Updating to the most recent [159.0 (64-bit)] update zapped my email account (gmail) settings. No, I haven't tried troubleshoot yet or re-entering all my IMAP settings. :) (I will when I can shoehorn the time.) My installation (64-bit) on the appropriate Windows version has had no problems for years, & updates have worked consistently (through both ap & OS updates, until this specific update.

My question right now is, has anyone else run into problems with this issue? I know it's not that much to go on, but I'm in a hurry & need to see if anyone else has experienced it.

TIA for any/all info. :)

Bill N.

I can't add my personal @hotmail.com account to Thunderbird. Every attempt ends with "Authentication error – Unable to log in at server. Probably wrong configuration, username or password." All my other accounts (Gmail and several Microsoft 365 business accounts using outlook.office365.com + OAuth2) work fine in the same profile.

Setup

• Thunderbird 160.0 (64-bit) on Windows (problem also happened on 159.0)
• Settings auto-detected by the Account Hub: IMAP outlook.office365.com:993 SSL/TLS OAuth2; SMTP smtp-mail.outlook.com:587 STARTTLS OAuth2
• POP3 (outlook.office365.com:995 SSL/TLS OAuth2) fails in exactly the same way

What happens

• The Microsoft sign-in opens in my default browser, I sign in with the correct account (2FA), and I get the "You're all set" page.
• With mailnews.oauth.loglevel = All, the Error Console shows a successful token response from login.microsoftonline.com with scopes IMAP.AccessAsUser.All, POP.AccessAsUser.All and SMTP.Send, and "Creating new login for ...@hotmail.com". Microsoft also emails me "New app(s) connected to your account".
• Immediately after that, account setup fails with "Unable to log in at server". The console shows nothing more specific.

What I already tried

• Removed and re-added the account several times; cleared the saved OAuth logins for this address
• Cookies are allowed; mailnews.oauth.useExternalBrowser is back to true (setting it to false made the redirect go to https://127.0.0.1 and fail)
• In Outlook.com: IMAP is enabled (toggled off/on and saved). The address is the primary alias of the Microsoft account. Two-step verification is on. Recent activity shows no blocked or unusual sign-ins, even right after a failed attempt.
• Webmail works normally.
• Microsoft support says nothing is blocked on their side and sent me here.

Is there anything else I can check, or a way to see the actual IMAP server response to find out why it rejects the token?

Meeting notices are showing locally as being stored in my Google calendar, but actually are not.

I have four email addresses in Thunderbird, say one@domain.com, two@domain.com, three@domain.com, four@domain.com. I get Microsoft meeting calendar invites from time to time at each of these addresses. I accept them.

I want my calendar also on my Android, so have subscribed to my Google calendar, say at address calendar@gmail.com, through the builtin Thunderbird feature of a calendar on the network.

After accepting a Microsoft meeting invite, say at two@domain.com, it shows up correctly in my Thunderbird calendar as being stored in my Google calendar:

  Calendar: calendar@gmail.com

But actually it is not in that calendar when I check the calendar on the web. And so of course are not synced to my Android.

Is the problem that in the calendar properties in Thunderbird that I have my main email address "one@domain.com" selected from the "Email:" dropdown? Should I change that to "calendar@gmail.com"?

If so, does that mean I also need to add "calendar@gmail.com" as an email account to Thunderbird? I have not done so yet, because I don't need email from that account, I am just using it for the calendar feature.

Thanks.

I have just changed my Gmail password and now see this message when I log into TBird

accounts.google.com needs you to confirm access again to keep syncing with your account. Username: X@gmail.com

(PII redacted by moderator)

The past couple of months, sending emails has been difficult. I did all the troubleshooting, such as verifying the network settings, allowing a longer time for connecting, tweaking Avast settings, rebooted the Spectrum modem, etc. It doesn't seem to matter if the email is only text or if it contains graphics or attachments. I have 6 Roadrunner accounts in Thunderbird, and the problem is with all of them. I have automatic updates turned on. Sometimes it takes several tries to get the email sent. Thunderbird is sending some of the "not sent" emails to a local folder, which is hard to get them out of. What am I missing? tnx

I use HTML as my signature. It has been working just find, but lately when people reply to me, their messages were coming in blue text. So today I changed the: Settings > General > Plain Text Messages > Quoted text formatting from blue colour to black (I have no idea how that was set to blue in the first place). that is all I did. Image attached of the change I made.

In any case, after that, when I tried to send a new email my HTML signature no longer displays the correct font (Pristina) but shows only variable text. The HTML file is not corrupt, it still looks fine in the actual file I saved, but, Thunderbird is changing it somehow. Even when I look back at sent files, Thunderbird is showing me the variable text and not Pristina.

Any assistance would be much appreciated. With thanks, NM

TB is not downloading pop3 emails again.

What does this mean?

NetworkTimeoutError: a Network error occurred Pop3Client.sys.mjs:380:18 SecurityError info: Pop3Client.sys.mjs:440:20 SecurityError cert chain: legacy.pop.mail.yahoo.com; serial# 07:CF:5F:D8:B7:96:17:C0:9F:C0:58:12:90:5A:41:8F <- DigiCert Global G2 TLS RSA SHA256 2020 CA1; serial# 0C:F5:BD:06:2B:56:02:F4:7A:B8:50:2C:23:CC:F0:66 <- DigiCert Global Root G2; serial# 03:3A:F1:E6:A7:11:A9:A0:BB:28:64:B1:1D:09:FA:E5 Pop3Client.sys.mjs:445:22

I've been having a bit of a nightmare - I was using Google mail - then I migrated to Proton - now I am going back to Google (for now).

I added my email address to Thunderbird and then had to installed Proton Mail Bridge to allow me to download all those emails to Thunderbird. This is apparently 9.5GB worth of email according to Mail Bridge.

Now when I open Thunderbird it keeps crashing, becoming unresponsive. I don't know how to proceed - do I need to sign out of Proton Mail Bridge - or Delete my account in Mail Bridge - or something else.

I can't tell if Thunderbird is busy "compacting folders" or some other task...

I have been in the meantime trying to delete messages from my Proton mail (in my browser) to see if that helps. But I can't tell if this is doing anything beneficial or not.

I literally can't open Thunderbird now without it crashing, despite me not taking any kind of action (just the spinning/loading wheel constantly visible).

Hope this is enough info but happy to share anything else! I have tried restarting the computer too.

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.twc.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.