BRE to send email

I don’t believe it is possible to send an e-mail from the BRE, so I would suggest the following:

Use a BRE policy to check whether the element contains the required value and update a boolean attribute (e.g. emailvalid) to indicate whether the email is valid. Return the updated message back to your orchestration and in a decide shape, check the value of the attribute, sending an e-mail via a send port only when the value of the emailvalid attribute is false.

Hope this helps, Nick.