With advancing years my eyesight must be failing ...
I have recently upgraded my Zimbra Desktop to v7.1.4 (build 11273). This is on a laptop running Ubuntu 11.10 64-bit. The upgrade went flawlessly.
I could swear that in the previous version, when you clicked the Preferences tab, and then clicked General under All Accounts, in the Other section on the right there was a checkbox you could check that said "Use Zimbra Desktop as default mail application", or words to that effect.
I don't see it there any more. Where has it gone? How am I supposed to make Zimbra Desktop my default email application?