How to trigger an event in flowable to create an email?

Currently i’am not using flowable’s email task. I already have an email micro service, so that i can pass this event to my email micro service

In that case, you’d have to call that microservice, which would then depend on what API it exposes. If it’s REST, you can use the default HTTP task. If it’s something else, you might need a service task with java logic.