Am 05.07.2016 um 16:47 schrieb Carsten Schoenert:
my setups work as you expected.
Please check the settings for Icedove Settings in
Menu -> Edit -> Preferences -> Attachments; Incomming -> Content Type 'PDF File'
There you have probably 'Save File' selected.
I have not, if I had icedove wouldn't ask...
I took a look at these settings and actually found two associations for
PDF files. One is labeled "application/pdf: .pdf", the other
"application/force-download: .pdf". Both were initially set to "Always ask".
I found out that "application/pdf" is applied to all *received* mails
with PDF attachments, whereas "application/force-download" is used when
*writing* a message. If I change "application/force-download" from the
default to e.g. "evince", then it works as expected.
This is not unusual since "application/force-download" is not meant to
be opened with any application. The question is, why is
icedove/thunderbird using the MIME type application/force-download in
this case?