Zimbra Toaster Modification
This works to an extent, but the To: field will typically read mailto:email@example.com rather than firstname.lastname@example.org. This may not seem like a large problem, but our staff has still had problems with it.
I recently ran across the Zimbra Toaster app and thought it might be a good fix, however, since the account name and password must be specified it will not work for our purposes. If there is anyone who could help by modifying the Zimbra Toaster app so it can redirect mailto: links without this authentication, I would appreciate it.