Use the jBPM 3 Mail class as a basis. Port that to jBPM 4 and change the template resolving with the ScriptManager.

Start with JUEL as the base language for the templates.

Add the method in EmailAddressResolver as a part of the IdentitySession interface.

First goal is to produce a test case in the jPDL implementation test suite that shows sending of an email programmatically based on a template. Use dumpster as the in-test mail server. Make sure to set the port to something high like e.g. 26354 just like in jBPM 3 email tests.