I can not print my pdf e-mail attachments. Print drop down screen appears but no print action whatsoever. I can print the e-mail itself but not the attachments...
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CHAMP0Thunderbird does neither display nor print any PDF attachments, or any other attachments which are neither images or text. Instead, it's calling the application registered with the operating system when you open the attachment. In your case, double-clicking on the PDF attachment should open, e.g., Adobe Acrobat, and you can print from there. If that's how far you get already, then Acrobat Reader has a problem which is well out of reach for Thunderbird at that time.