I'm using Zimbra Desktop with my Yahoo accounts and I thought it was doing a great job - downloaded some 40k emails from two accounts.

But when I went to look at some emails in one of the folders - the Yahoo folders - there was nothing in them.

One account has all those folders filled with the mail that should be in them.

The other account doesn't.

Any reason for this? A bug? Something I can do to force the downloading to these folders?