How can I send an email notification of a rejection in the Assign Flexi Task?

after flexi task action add run-if action to check if task outcome was REJECTED.

add send notification action into run-if action and configure your notification message.

Hello,

I would just include a send email action on the Reject branch of the flexitask - assuming its a list workflow set the To field of the send email to the Initiator (person who starts the workflow) - as long as your workflow is set to run on item create, initiator will be the person who submits the form (unless you customize something else).  

Thanks,
Mike

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I've followed these instructions (added Email Notif after REJECT as well as a RunIf with a email notification)  NO notification is received (not in junk either). WF is set to run on Create. Please Advise

update to RunIf config - still NOT getting emails