We currently have Rackspace Email. We would like to have hosted LDAP to use as an address book, including ability to read and write entries over LDAP, with userSMIMEcertificate in addition to the usual attributes.

We also would like to have you expose the XMPP that underlies your webchat. The webchat is totally useless to us, but XMPP to access from our clients directly would be of great value.