Cross-domain communication in domain-restricted communication environments

A messaging frame can be used to allow different domains to communicate in an electronic environment that are otherwise prevented from directly communicating. A messaging frame or other communication element can be configured to receive messages or communications from any frame, object, or element in the same domain as the messaging frame. The messaging frame then can switch to a target domain in order to provide the message or communication to a frame, object, or element in the target domain. The messaging frame can include an interface definition that allows only approved messages to be passed between domains, such that the risk of malicious attack is minimized.