Thunderbird Community Forum

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?

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

I can't open an email attachment with last part rs6.net. This is a reliable email with important information I need for a church conference.

Hi everyone,

I’m new to Thunderbird. I’m using version 149.0.2 (aarch64), and I’ve noticed that when I receive one or more attachments, I only see a file called winmail.dat.

Is there a way to view the actual attachments, whether they are PDFs or other file types? Thank you!

Не отправляются письма с вложениями с Thrunderbird с данных почт mng326@anepmetall.ru mng323@anepmetall.ru 209@anepmetall.ru 204@anepmetall.ru 201@anepmetall.ru 205@anepmetall.ru 220@anepmetall.ru 218@anepmetall.ru 206@anepmetall.ru 208@anepmetall.ru 217@anepmetall.ru 215@anepmetall.ru mng314@anepmetall.ru 211@anepmetall.ru 202@anepmetall.ru 210@anepmetall.ru 214@anepmetall.ru buh-krsk@anepmetall.ru 212@anepmetall.ru 207@anepmetall.ru проблема массовая. С других сервисов письма отправляются нормально. Подскажите в чем проблема?

When I type the word "attachment" in version 149.0.2 I no longer get the warning bar across the bottom of the screen. I do have the "check for missing attachments" box checked in Settings.

I am working on a new laptop running Windows 11. Thunderbird was successfully installed a week ago and was running fine until I made a change related to OneDrive - attempting to remove OneDrive as a default location for files. later, I attempted to open an MS Word attachment to an email and got this message from Microsoft Word: "Unable to open the existing file: (C:\Users\..(myname)..\AppData..\Normal.dotm)".

I think my OneDrive action - removing a OneDrive folder from my C:/Users/..(name)../ location on my laptop - per Windows support directions, caused this. Maybe a disconnect between Thunderbird and MS Word? I can open other file types that are attachments.

Can you help explain and correct this problem?

Thanks

T-Bird,

Using the latest version of Thunderbird, all of the sudden I cannot attach/send photos or documents. The 'send to' mail icon in the menu is not lit up to accept the attachment. The message come back 'no file associated'. My defaults are as they were. I have been using Thunderbird email client for likely twenty years. What has changed and how can I get my Windows 11 to recognize again? Would reloading the program help? Any information/help would be much appreciated as I am not a system dive in file changing techie. Thanks, Doug

Ich benutze Firefox auf zwei Windows 11 Rechnern. Die Version ist auf beiden Rechnern gleich, (149.9 esr 32Bit ) , beide Rechner greifen im Fall des Verfassens einer E-Mails mit Anhängen auf einen gemeinsamen Speicher über LAN zu, seit kurzem gibt es bei einem der beiden Rechner aber beim Anhängen einer Datei an die Mail eine Verzögerung von ca. 5 Sekunden, bevor der Anhang auftaucht, unabhängig von dessen Größe. ( Also auch kleine Pdf´s werden verzögert angezeigt.) Der zweite Rechner hat das Problem nicht, selbst bei grösseren Anhängen. ( Auch sind die Rechner fast bau-und ausstattungsgleich ) Testprogramme auf dem Problem-PC zeigen keine Auffälligkeiten beim Schreiben und Lesen, auch die Internet-Verbindung ist die gleiche... Habe bereits die Einstellungen der Konten und des Programms in beiden Rechnern verglichen, sie sind gleich. Hat jemand eine Idee, woran das liegen kann?

Grüsse, Martin

What happened to the useful top right window box for attachments on my outgoing emails, can I return it? It's gone to the bottom and is really annoying, I mean who decides these useless and unhelpful changes?

Hello, I’ve just started using Thunderbird and I really like it so far.

I have one question regarding attachments. In emails that include attachments, is it possible to change how the attachment area is displayed? Currently, it appears as a single line at the bottom of the message. Ideally, I’d like to have it displayed more prominently, preferably at the top of the message, similar to how it appears in Outlook.

So far, the only adjustment I’ve made is setting mailnews.attachments.display.start_expanded to always show attachments expanded. Are there any other settings or methods to further customize the attachment view or position?

Thank you in advance.

hello, i cannot seem to find a solution online, hopefully someone here can help.

i often receive emails with images attached, and most of the time people don't resize the image. so you can imagine over time this all adds up. i dont always need to keep a 6mb image versions. i would love if there is a way to resize the email image attachment, to at least still have a smaller copy for refence, but not end up with a huge email account (local/pop3)

preferably a one click solution, or even a routine i can run on the file system, etc.

thanks

Good day,

I am a TB user (for work) and i love it, the main reason being the fact that it's simple, compared to MS Outlook, for example. Easy to use, intuitive for new users, and so on. So congrats to everyone for keeping it simple! :)

Now, an issue i've come across recently. More and more people send documents as .jpeg, pictures taken by smartphones. And, as everyone knows, the recent models have increased the MB of each camera. And most people sadly keep the max resolution, best quality, like you'd use when going on a holiday. But you don't need this when you take a picture of an invoice or a gas receipt. This results in very large attachments, esp. when you add several pics to an email.

The current limit seems to be 25MB (i got this from Google, didn't see any mention of a limit in TB help?!). So my question is simple: can I, a user, increase this limit somehow? Or is it a dev related setting? If users can, please guide me through some options/menus because i haven't found any. I use the latest version, 140.8.0esr. A realistic limit, imho, would be 100MB/email.

Also, kindly please keep feedback on topic, I am not interested in sharing, or sending in any other ways, like wetransfer, google drive, one drive, etc.

Thank you!

After creating an email message, I click on attachment button to attach a file or pdf document to the message. The file explorer screen opens for a second then closes, giving me no opportunity to attach anything.

Hello,

Need help with the following as its creating confusing attachments. Whenever someone attaches an EML file to an email, the attachement pane shows the EML file AND the attachments from said EML file along with any other attachement, is there a way to not show the EML attachments to avoid any confusion and not download repeated older attachments?