I-Thunderbird Community Forum

I have been trying to add my accounts to Thunderbird and had good success with gmail but wasn't able for Microsoft accounts. As I said in another thread (can't find the message anymore), I have 2 microsoft email account (one live.ca and one hotmail.com) and they both don't work. I was able to add them in Outlook desktop app and EM Client (a non open source software i'd rather not use) through IMAP with success. IMAP is activated in both accounts and as per Microsoft documentation the server is supposed to be outlook.office365.com on port 993. eM Client magically discover IMAP settings to imap-mail.outlook.com instead. Thunderbird opens an OAuth page and then it redirects from microsoftonline.com to localhost and fail with "Unable to connect".

2FA not activated in one account, if that matters. I have nothing running on port 80 if that matters.

With 03.04.2026 they began to notice that the attached emails in eml format (the attached emails have attached documents, mostly pdf) sent from yandex mail stopped opening. Everything used to open well. Eml also does not save to disk. If you send the same files via Gmail, everything opens. Program version 150.0.1

Hi, I use thunderbird as both POP and IMAP through gmail. I keep all my emails on my POP thunderbird desktop client. I use IMAP on my thunderbird laptop client, iPhone, iPad via Apple mail when remote, then download the emails to my desktop.

What I want to do is read emails and set them to archive on my IMA laptop, iPhone, iPad. I know Gmail tags the archived emails. How do I stop thunderbird from downloading the archived emails to my POP thunderbird desktop client?

Thanks! Art

I have connected a Google Workspace (Gmail) account to Thunderbird, let's call it scott.harper@myorg.org. I am able to send, receive, and reply from this account as expected.

In my Google Workspace configuration, I have an alias address forwarded to my account, let's call it info@myorg.org. I receive messages addressed to "info" just fine. But when I send or reply to messages addressed to "info", I'm running into a problem.

In the Account Setting I opened Manage Identities, and added info@myorg.org as an alternate identity. I then edited the Private Data for that identity so that the "Reply from this identity when delivery headers match" option is checked, and set to match info@myorg.org. See attached image.

When I reply to an incoming message, the From field appears to be (sort of) correct... it shows from info@myorg.org, but next to it (in italics) is the primary account identity, scott.harper@myorg.org. See the other attached image. This is also the case when I compose a new message and select the info identity.

In both cases, when the message arrives at the destination inbox, it is from scott.harper@myorg.org instead of "info".

I'm assuming I don't have the matching rule, or some other setting configured correctly. Would appreciate any other tips/ideas.

I've noticed that if I attach a file to an outgoing message then use ctrl+enter to send the message, Thunderbird also opens the attachment. How can I prevent it from doing the latter?

I have daily tasks that I dismiss every morning. When I open the Tasks tab, all the dismissed tasks are still there. Is there a delete the completed tasks so they don't clutter the task list? The attached image shows my list of dismissed task, all in red.

I am trying to add an email address to thunderbird it is an outlook email address [edited]@outlook.com I have checked the address and the password and both are correct however thunderbird says that the configuration is incorrect and will not accept it. also I have it open in another browser window will that cause problems ?

I am unhappy with version 150 of Thunderbird. In earlier versions, I was able to access the full range of emojis when writing an email. That is no longer possible; I can now only access a few. The integration of add-ons with Thunderbird isn’t working properly. After adding the German dictionary, Thunderbird froze; after adding ImportExport Tools, Thunderbird not only crashed but also wouldn’t start up again.

Everything has been fine for several years but this morning I now get error: TB could not connect to server mail.twc.com, the connection was refused. Spectrum says everything is good on their end. What do I have to do to "fix" Thunderbird? I can't send or receive any emails from 5 accounts with Spectrum and the emails are there when I log in at WebmailSpectrum.net..

送受信メールが表示されなくなりました。 テストメールの送受信は問題なくできていますが、thunderbirdメールソフトには表示されません。 XserverにWEBメールは生きています 表示されない問題を解決するためにAIに聞いたところ、「受信トレイ→右クリック→最適化」を実行したが、それまで表示されていた過去の受信メールがすべて消えました。 本体からメールが消えたのかAIに改めて聞いたところ、画像の「INBOX」の状態になり、消えてしまった可能性が大きいとの回答でした。 ウィルスバスターを導入しているので、それが干渉した可能性も考えられます

対策として「アカウントを削除して、新たに設定しダウンロードを提案されました。この方法で復活するでしょうか

https://g.co/gemini/share/6a7da4881c86

In one email account the arriving messages arrive shown as "read". before they showed "unread" and were bold. I've tried but can't figure out how to reverse that. a different email account on the same reader shows new messages

Comcast/Xfinity email services have migrated to Yahoo. Using Thunderbird I cannot send out a reply. the error message is "Login to server smtp.mail.yahoo.com with username leifsvensen failed."

I am getting emails in, but for some reason it is not asking for a password when I open up Thunderbird. I would like it to ask for a password every time I open Thunderbird.

outgoing mailbox settings: Server name: smtp.mail.yahoo.com Port:465 security: SSL/TLS Authentication: normal password user: leifsvensen

I have also tried it with authentication turned off and get the same result.

Thanks Leif Svensen leifsvensen@comcast.net

Bei manchen PDF Dateien 2,7 MB bekomme ich die Fehlermeldung Datei beschädigt. im Originalpostfach ( t- online ) Zugang über Internet ist der Anhang ok. Wenn ich die Datei vom Server direkt ( z.B. t-online nochmals an meine E- Mail Adresse sende und dann über mein Thunderbirth Mailprogramm öffne, ist die Datei ok. Der selbe Effekt tritt auch auf meinem Lapptop mit Linux Betriebssystem auf. Was kann die Ursache sein?

I've been using Thunderbird for about two months now and I just realized that Thunderbird (150.0.1) seems to be unable (or unwilling) to use some of the fonts that are on the computer (Windows 10, plenty of RAM and disk space).

Let me explain that I don't send a lot of emails, and most of the ones I do send are just a few lines so I had not had any reason to bother with the font -- the default font was fine -- until today...

Today my experience with fonts in Thunderbird was extremely disappointing. It started when I was composing an email and I copied/pasted some text from a web page into the email. Rather than treating the pasted text as simply text to have in the default font, Thunderbird put it in some strange font and size. This might have been Thunderbird's attempt to use the font from the website but neither the font nor the size resembled the text that I had copied/pasted. That was when I noticed that Thunderbird does not let you choose the actual size but only offers the choice to make text larger or smaller. Making the text smaller was sufficient for that particular time.

As I finished the email, I tried to sign my usual signature. Thunderbird lets you choose the font but once I had chosen the font that I routinely use for my signature, I discovered that Thunderbird totally ignores the choice that it just let you make. Instead of displaying the signature in the chosen font, it displayed my signature in a plain sanserif font.

I could live with a limited choice of fonts -- I have used another program where the only choices were serif and sanserif -- but I cannot understand why Thunderbird would offer a font choice menu that includes all my installed fonts when it actually only honors three choices. The only fonts reliably used seem to be some generic sanserif font that Tunderbird calls Helvetica/Ariel, a generic serif font that it calls Times and another serif font it calls Courier.

The dropdown menu lets me choose any of the fonts I have installed, some of them display properly while composing the email, others don't. If I send the email to another of my email addresses, Thunderbird displays the text the same way -- some fonts are correct and some fonts get replaced with one of Thunderbird's generic fonts.

I'd really like to have all my fonts available -- but that doesn't seem to be possible with Thunderbird so I guess I need to figure out which fonts Thunderbird is willing to use.

Now I have Tbird running on my Android with all my email accounts in it. However; my PC version (Win 11) is like a first install. Blank slate. It asks about some "Hub" thing and I don't understand exactly what it is asking for. Outlook name and password? Mozilla account name and password? Some other username and password? Can't transfer anything from mobile to PC (not good). Any way to fix this? Don't tell me I might have to go back to Outlook...

I have multiple email adresses for different purposes, but all of the incoming emails are sent to the Local Folders inbox, where I have separate folders to save emails for the each purpose. I am able to manually sort the folders in the order that I prefer, however each time I shut down Thunderbird and then restart it, the folders end up in seemingly different random order each time. Is there a way to ensure the manually sorted order of the folders does not change?

Ich kann kein weiteres Emailkonto zufügen, es zeigt mir immer eine Fehlermeldung bei der Authentifizierung egal was ich erfasse...

Ich erkenne nicht, wo der Fehler liegt? Was nun?

Wie kann ich ein weiteres Email Konto hinzufügen?