Since I updated to macOS Sierra (10.12.2) PDF attachment are shown with sizes of 0 KB and a preview is not embedded. Resetting Mail and even re-installing the whole macOS system (factory default, no recovery) did not help.

The only way to read the attachments is to view the e-mail raw data (++u) and then store it into an *.eml file. The created eml file can then be opened with Apple Mail via +o and the attachment is readable.

What am I missing? My inbox is IMAP not POP3 and my provider is posteo.de.

0 KB PDF attachment

1 Answer 1


Go to Preferences -> Accounts -> specific account, and change the pop-up entry for Attachments from "all" to "last" (or however the "zuletzt" entry is called in english).

  • 2
    Herzlich willkommen! Bitte nur Englisch benützen; dieses Antwort wird sonst gelöscht.
    – Glorfindel
    Commented Apr 20, 2017 at 16:44

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .