A method for condition-based message delivery may be provided. The method may comprise receiving a first message, a second message and a condition on a sending message server at a first time instance. The method may also comprise encrypting the first message with a first encryption key and encrypting the second message with a second encryption key, as well as sending the first and the second message to a recipient message system. Moreover, the method may comprise receiving a request from the recipient message system at a second time instance for sending one of the decryption keys corresponding to either the first or the second encryption key, and sending the first decryption key or the second decryption key depending on the condition to the recipient message system.