Search Email via SOAP message
I want to search through an Email account. Normally I use the IMAP protocol to access the account and filter the emails according to some properties. Unfortunately, I saw that Zimbra does not support the filtering on all header properties. Therefore, I have to switch to SOAP (at least I hope to solve my problem with it). But I don't know how to use it.
Could anyone tell me the command (SearchRequest?) that I have to issue to the Zimbra Server? Is it even possible to filter out with SOAP some emails?
Hope you can get me some hints!