Thunderbird Support Forum

I am unable to login into Gmail, nor Exchange 365 on Windows with OAuth2.

In the Google auth flow, clicking "Allow" to grant permissions to Thunderbird causes the page to hang and nothing happens.

The default attribution line created by Thunderbird when replying doesn't work well when sending e-mail to Outlook users. [Unfortunately, Outlook users comprise 100% of the people to whom I send emails in TB.] TB's default attribution line causes Outlook OWA to hide the entire reply from the reader unless they click on a [...] button to show it. Then when displayed, the entire message is quoted/indented.

Yes, this is a bug in Outlook. No, it's not going to get fixed.

This can be avoided by changing the attribution line which current defaults to:

       On <date> <time>, <name> wrote:

Simply adding a space after the colon at the end of the line "fixes" the problem, but it's annoying to have to do that manually.

Can that attribution line be configured somewhere?

I've found all sorts of addons that let you muck with the headers of replies, but the headers are fine. It's just the attribution line that needs to be fixed.

TSO Host migrated all my email accounts to a different server. All my emails have stopped downloading to Thunderbird. I cannot find a way to configure my TSO Host email accounts since they upgraded their servers to Cpanel deluxe yesterday and neither can anyone at TSO Host.

I would like to set up an email account with a pen name that I am using as an author. Is there a way to do that without giving my actual credentials? Thanks for your kind attention.

I seem to have lost the search bar that allowed me to find certain emails in specific folders. I am now left with the one that searches all my email folders. Why? How do I get it back?

Thunderbird 115.6.1 (32-bit) on Win 10 and Win 11, local calendar, no email invites are sent to the listed Attendees. Correct email is entered on Calendar/Properties/Email and Notify attendees is ticked on New Event dialogue. Attendees are correctly entered under New Event/Invite Attendees. After clicking Save and Close, there is no Invitation email record in "Sent" emails and the Attendees do not receive email invitations. The event *is* saved in the originator's calendar.

The invites were correctly sent on the Win 10 PC up until TB version 113 (?), when they stopped working after the update (I think). Eventually email and calendar data were transferred to a fresh TB installation on a Win 11 PC, but the invites are still not sent.

The only difference that I can see between this non-email-invite-sending version of TB on a WIn 11 PC and another Win 10 PC where the invites are sent, is that "Troubleshooting Information/Force Email Scheduling" is set to true on the non-working version and is blank on the working one. Clues where to look next?

Hi there I must say having used Thunderbird for probably ten or more years that V115 has been a big pain in the butt to get used to. Why change everything? It was fine before.

OK I can get used to a completely different layout and changed menus even though I don;'t want to but I cannot figure out how to change the background from solid black which I hate. I have spent several days on and off looking for an easy way to do this and can't find it.

So now I go to write an email and the black screen doesn't show anything with black letters of course?? What is the reason for this? So I have to change font over and over to white color.

When I read new emails no problem background is white and font is black like a normal screen. Who had this bright idea?? Please give me a simple solution not involving Css whatever programming such stuff I cannot figure out and don't want to learn. Thanks so much

The latest update of Thunderbird somehow made this message appear "This is an unsupported version of Thunderbird!!" (see attached picture). Is this a bug? I've checked the version on the homepage and it's the same that's running on my PC (Windows 11).

I subscribed to a blog as I usually do in Thunderbird but it ended up as a folder. I've tried to delete it but it doesn't go away. There are no posts in it either and resubscribing to the blog doesn't work - it just says I'm already subscribed. Any suggestions?

A while ago I subscribed to an RSS, but all that happened was that two empty folders were created and they're impossible to delete. They just return. I run the latest Thunderbird on an updated Windows 11 PC.

I just downloaded and installed Thunderbird.... I fire it up and the "three lines" button I need to click to add my email account details does nothing. So the software is not doing much at the moment. I don't know what to do. I uninstalled. Restarted...and reinstalled...but this did not work. What am I doing wrong here?

Duncan

Yahoo Mail was down for HOURS last night. When it comes back up overnight, I can login to my secondary emails (Yahoo.com) but the correct password for rshearin@verizon.net responds "server error"

Yahoo washes their hands of it because it's a "third party app."

I am using Thunderbird 115.12.1 (64 bit) on Windows 10 with the email account set up as POP3 for the Gmail account

I have a subfolder under an Inbox (Gmail account) that is no longer showing up. If I search for an email address from a sender that was in the folder, I get a list of emails showing the dates and subject, but if I click on the email, the tab that opens is blank.

My PC crashed, but I can't say for sure when the folder disappeared, other than I know it was there 4 days ago. It the the only subfolder that is missing.

Any help is appreciated. Thanks

Device: Desktop computer - Win 7 Pro Email client: Thunderbird Version 102.13 Server: POP settings

I am a Cox email user and was recently migrated to Yahoo. After I input the correct server settings on the Thunderbird app,each time I click on the Get Message button, It starts downloading all (100K+) the email messages in my Yahoo inbox, including the ones that were already downloaded on my computer from the Cox server. Are there certain settings in Thunderbird that will stop this issue and just let me download new messages? TIA -Craig

From the article "Microsoft OAuth Authentication and Thunderbird in 2024" there is a screenshot showing a OAuth2 option for the SMTP server setting with STARTTLS connection security. It does not appear for me. There are only the five options, as shown in the screenshot. How do enable the option to be available in the drop-down list or set it?

The available options are:

No Authentication Normal Password Encrypted Password Kerberos / GSSAPI NTLM

I am on Thunderbird version 115.12.1 (64-bit), Windows 11, version 23H2, build 22631.3737

Do I install the 64bit option or 32bit ?? The installer gives me a choice.

After installation on the new M3 mac, I will be migrating my Thunderbird profile from a 2021 iMac that runs BigSur on Intel silicon.

I'm anticipating updating the iMac to Sonoma, but long experience has shown me that major s/w version upgrades are often very unfriendly to 3rd party s/w apps&data, so I wanted to get my tBird profile (all my mail history) working on the new Mac before doing the major upgrade on my iMac.

I've appreciated using Thunderbird for an ad-free Hotmail experience for quite some time. I've changed my Hotmail password every few weeks lately and Thunderbird worked fine when I entered the new password at the prompt when Thunderbird started.

Just now however, I needed to get into my Microsoft account that uses the same password as my Hotmail account. My login to Microsoft failed. Trying to understand why, I looked in Thunderbird at the saved password for Hotmail's server:

oauth://login.microsoftonline.com (https://outlook.office.com/IMAP.AccessAsUser.All

https://outlook.office.com/POP.AccessAsUser.All 
https://outlook.office.com/SMTP.Send offline_access)

The saved password was a 464 character long ASCII string totally irrelevant to the password I'd selected for Hotmail and Microsoft.

I went through the password change process for Hotmail, was then able to get into my Microsoft account and restarted Thunderbird. As usual, Thunderbird asked for the new password. I entered it and was then able to receive new mail from the Hotmail server in Thunderbird. However, again, the saved password in Thunderbird for Hotmail was not the password I'd entered.

Next, I deleted the saved passwords in Thunderbird, restarted it and this time it prompted me to be sure I'd downloaded it from a reliable source. I've never seen that prompt before. It came with my Linux Mint installation, so I thought it would be safe, but again there's an irrelevant password saved for my Hotmail account.

It's like it eventually changes my password for Hotmail and Microsoft since I can get mail through Thunderbird with the odd password it saves, but if I use what should be my password for Hotmail or my Microsoft account via a web page interface, the password doesn't work.

I'll have to stop using Thunderbird if this continues.

When looking at my list of folders after download, the SPAM folder doesn't seem to update the count of unread messages until I specifically open it. I miss the fact I have spam unless I specifically go in and look. Is this a function/feature of JUST the SPAM folder (all other folders seem to have their counts updated after a download). On Thunderbird 115.12.1 64 bit if that is of interest.

I'm porting Thunderbird from my W-10 PC to a new Mac. I tried some things and found help on the net. Heere are the steps I took:

WHAT DOESN'T WORK (but I did): Removed installed Profiles folder and saved on desktop. Transferred PC Profiles folder to same place in Mac.

Deleted PC folder from Mac. Replaced Mac Profiles folder had previously moved. Deleted installs.ini and profiles.ini Started Thunderbird which created new profiles in Profiles folder.

WHAT SHOULD WORK BUT DIDN'T (after above): Removed new contents of Profiles folder. Transferred contents of PC Profiles folder to Profiles folder on Mac. Got the following message: "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible."

What did I do wrong? Do I need to uninstall Thunderbird and reinstall? Would that solve problems?

Thank you.