Zimbra Collaboration & Zimbra Desktop Forums
You will have a tough time getting the messageID of a conversation where you rightclick in the screenshot.however it is possible to get msgid when rightclicking on the msg in the msglist of a conversation. but I agree the documentation of zimlet api is ridiculously bad. no real examples for every api. and there should have been more examples on contextmenu and toolbar.
soap api is however execellent. making me think perhaps zimlet api have a planned end of life.
Miclesmol are right, BounceMsgRequest in soap api will do what your after as long as you have the msgid of the message you want to redirect.