Technologies are disclosed for validation of condition-sensitive messages (or other electronic files) in distributed asynchronous message workflows. An asynchronous message processing system includes a message producer configured to generate an original message that includes at least one attribute related to a time of arrival of the original message at a message publishing service. A validation service is also included that initially validates a current time and generates alternatives for the original message. The alternatives for the original message are based upon a plurality of potential times of arrival. A gatekeeper service selects one of (i) the original message or (ii) one of the alternatives for the original message based upon a time of arrival. The selected message or alternative for the original message is provided to the message publishing service to publish the selected one of the original message or the selected alternative for the original message to an entity.