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EMQ can also be driven via its API, through externally selected queues from another plugin. One plugin that uses EMQs API is the Enterprise Message Handler for JIRA. This provides customization of Templates for JIRA users and Email only recipients, those notifications can be digested through EMQ too, by selecting EMQ within JEMH Event Listener configuration (TODO).
JIRA and API Event Source
Performs processing of both the JIRA and API Event Sources mentioned above.