I-Thunderbird Community Forum

Firefox on this Windows 10 computer stopped providing an email Send option about 2 weeks ago. I still receive all messages fine, but must use Firefox on an older windows 7 computer to send emails. What can I do? Other internet receive and send functions are still working. The problem is only with email.

I am no longer getting emails on Thunderbird on my computer though I do get them e.g. on my iPad, and I can email out. Is that a problem with Thunderbird or with Bell my service provider?

For some reason since reinstalling my Thunderbird every time I try to sen e-mail I get the error "Sending of the message failed. An error occurred while sending mail. The mail server responded: <SantoshS1@vbeyond.com>: Recipient address rejected: Access denied. Please check the message recipient "SantoshS1@vbeyond.com" and try again.

They are perfectly valid addresses, as they are generated using Reply. This did not happen before I was forced to reinstall from scratch. I suspect it may be some sort of issue with my account configuration in Thunderbird, as I had to recreate that.

I receive the following error message: Not enough disk space to download new messages. Try deleting old mail, emptying the Trash, and compacting your mail folders and then try again.

I get the message when I want to download new emails. The suggestions to fix the problem DO NOT WORK. I cannot compact, the Trash is empty and I know there is GB's of space on my C: drive, which contains all Windows software. What to do?

I have all my past emails in specific folders within Windows Mail currently. I have three email accounts. I want to set up Thunderbird and import all the folders of emails into it and access all three accounts from within Thunderbird. I have a Master computer running windows, a tablet and a phone. I would like each device to be able to access all the email accounts and the stored folder tree within Thunderbird. I would like the Master computer to be set up with POP3 for all accounts so I can archive those I need to keep. I would like the tablet and the phone to be able to see and interact with the emails via imap so that when the Master is opened it downloads everything for processing. Do I need to set up each device separately with accounts being either imap or pop3 accordingly? will they all sync together? Thanks for your input.

No new messages after opening Thunderbird

Since yesterday (24/07/2025), when I open Thunderbird, I don't see new messages. I can see the number of new messages, but no new headers. I didn't have this problem before. When I access my account through a browser, there are new messages that Thunderbird doesn't see. I have version 140.1.0. I have the message threads enabled - All.

Polish/Polski Brak nowych wiadomości po otwarciu Thunderbirda Od wczoraj (24-07-2025) po otwarciu Thunderbird - nie widzę nowych wiadomości, widać liczbę nowych wiadomości, ale brak nowych nagłówków. Wcześniej nie miałem tego problemu. Jak wchodzę na konto przez przeglądarkę, są tam nowe wiadomości, które nie widzi Thunderbird. Mam wersję 140.1.0. Mam włączone odnośnie wiadomości - Wątki - Wszystkie.

I can no longer send emails. I can send them through mail web browser and was in touch with their technical support and the problem is not on their end. The message I get when trying to send an email is: "Sending of message failed. The message could not be sent because connecting to outgoing server(SMTP) Promail.ptd.net failed. The server may be unavailable or is refusing STMP connections. Please verify that your outgoing server (STMP) settings are correct and try again". I checked my outgoing server settings and they are correct. I started Thunderbird in Troubleshoot mode and the problem still occurs. I started my Windows 10 in Safe Mode and the problem still occurs.

Hallo Zusammen,

bei der Neueinrichtung auf einem neuen Rechner fehlt mir der Ordner für gesendete Mails.

Ich habe die Anwendung auch schon komplett deinstalliert und wieder aufgespielt. Hat sich leider nicht geändert.

Was kann ich noch machen?

Beste Grüße

Mit meinem e-Mail Konto .gmx.de kann ich keine eingegangenen Mails mehr weiterleiten und auch keine neuen Nachrichten mehr versenden. Nach dem Betätigen "Senden" kommt immer der Hinweis "Postausgangsserver SMTP kann nicht authentifiziert werden.Überürüfe Passwort und gewählte Authentifiziermethode unter Kontoeistellungen " .Ich habe aber nichts verändert und weiß nicht was ich in Einstellungen überprüfen soll oder ändern soll.

I'm running Thunderbird 102.15.1 (32-bit); still running this old version after reading how awful many people found the next update to be.

I POP my personal domain email to TB.

Beginning yesterday, out of the blue, I started getting the error which I'm attaching when trying to download my email. Absolutely nothing had changed. I made no changes either within TB nor to my computer at all. Computer reboots haven't helped.

What should my first course of action be to resolve this?

Many thanks.

Mozzilla fonctionne mais je ne peux plus faire "envoyer" mes mails. C'est terrible d'autant que n'y comprends rien . Je rédige-sur la page "Rédaction" et après il n'y a plus de case "Envoyer." par contre je reçois les mails J'ai glané les infos au bout de 2 jours  : IMAP Je sui "Orange" Sortant SMTP/SSL/TLS port 459 Entrant SMTP/SSL/TLS port 995 et quelque part  : version 140.II.Iesr  ? Vous pensez que c'est grave ? ça fait 10 ans que ça fonctionnait

Every time I send a message, it duplicates itself. Any help in removing this problem in the settings will be appreciated. Please keep in mind I'm not that savvy with settings so if you can keep this simple like me, that would be great. I'm using version 151.0 64-bit on Windows 10. Hopefully someone be able to help me resolve this problem.

Thank you, Joe

Hello there,

Using POP3 protocol I receive only the email metadata. It used to work before, it is happening for the last 2 days. See below. It works if the account is created as an IMAP, but this is not what I want. And another thing, it works properly with EM Client latest version that I installed.

Thanks, George

X-RG-Rigid: 684FABBC0C25E40 . X-RazorGate-Vade: 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 X-RazorGate-Vade-Verdict: clean 20 X-RazorGate-Vade-Classification: transactional-account Received: from a59-51.smtp-out.us-west-2.amazonses.com (54.240.59.51) by cmx-torrgi004.bell.net

       id 684FABBC0C25E407 for gdonisan@sympatico.ca; Wed, 13 Aug 2025 14:45:00 -0400

DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=6ujb3doj4mwbngmp2xjutilwl4zbdio3; d=firefox.com; t=1755110699; h=From:Sender:To:Subject:Message-ID:Date:MIME-Version:Content-Type;

I can receive emails fine. But when I attempt to forward an email TB tries using the wrong SMTP server, and an email address that no longer exists in any email account. For example, the email is in a yahoo account and TB tries using a gmail server. I have email accounts (in TB) with gmail, yahoo, rocketmail, AOl, and verizon.net. I have verified ALL server settings for each account as correct. I first experienced this in ver. 140.8.1esr(64-bit), and updating to 140.10.1esr (64-bit) did not resolve the issue.

How can I get the "send" button back in my menu. I am not offline. I am receiving messages and can write and save messages to draft but there is no SEND button in my menu anywhere to enable me to send messages out.

I have done this to have Tbird put email in the outbox... Click the Config Editor... button. Search for: mailnews.sendInBackground. Double-click the entry to set it to true.

It worked fine on Apr 19, but not today. The email goes to the outbox folder, but is then sent right away. What next? Thanks.

After many years of using TB without any problems on an older computer with Win 10 I suddenly have this confusing little hiccup. If I hit New Message, Reply or Forward a small rectangular box (about 8 x 100mm) appears with a shaded outline in the centre of the screen where the body of the email would go. There is also a black lock with a red line through it at the start of the "Subject" line of the blank email, I don't think I have seen it there before but I maybe wrong.

Clicking inside the box gives nil response except on the far right on the formerly black X that has changed to a white X with a red background when it just deletes the whole page. No amount of right or left clicking outside the box gives any response except for the "error ding sound" and the box jiggles. The box can be dragged to the edge of the screen without any change in responses.

All other email functions work normally, there are no problems with receiving, reading or deleting emails. I do not know how to find out what version of TB that I have installed. So to sum up if I hit New Message, Reply or Forward the only thing TB will let me do is delete the new blank email that I want to send (once it is completed). I have not got the foggiest idea of what to do to fix the problem.

Suddenly, when I go to send e-mails (to me, or anyone else) I get a pop up signal that says I can't send it because it might be questionable, etc. What do I do send my e-mails since none of them are "scam" or "questionable".?