The "Save Attachments" feature is hard to discover. I spent a number of minutes search through the GUI to see whether KMail had that feature. Eventually I concluded that it didn't and saved all attachments from the e-mail one by one. A few days later I found the menu entry by right-clicking in the message pane. It didn't occur to me that it could be there (I didn't know about that menu until then, in fact). The first place I looked for "Save Attachments" was in the right-click menu in the message list. The second was in the "Message" menu in the menu bar. I believe those are the most intuitive places to look for the feature, and the menu entry should be in both places. Reproducible: Always
"The first place I looked for "Save Attachments" was in the right-click menu in the message list" already done in 4.11
Right, I see "Save Attachments" option on the message's context menu in the master version. So this is resolved in 4.11 as far as I can tell.
That's great! Thanks.