I've found here (Web Client URL Tricks - Zimbra :: Wiki) a way to directly open a new message with a URL : https://server.example.com/?view=com...ser@domain.com

But do somebody know if it possible to directly open an existing message from its id? with something like ?id=<...>

I couldn't find something working..

And if it's possible, could it be possible to open only a popup? and not the whole Zimbra Web client (when it's already opened)?

Thanks and best regards