A computerized method for integrating message-based services with external execution environments includes receiving from a first external execution environment a request to access message-based services of a messaging software. A processor determines whether the first external execution environment includes a pre-existing relationship with the messaging software. If no, the processor requests access to a second external execution environment on behalf of the first external execution environment. The processor receives a response from the second external execution environment granting the access; and the processor grants the request from the first external execution environment to access the message-based services in the messaging service while integrating services from the second external execution environment to the messaging software. If yes, the processor identifies parameters associated with the pre-existing relationship and grants the request from the first external execution environment.