When I email a DEADLOCK to a team member familiar with, or responsible for, the functional area, for them to get a "blind" DEADLOCK email, bearing no introductory narrative, saying nothing about frequency, or suggesting that mitigation code be added where known to not be present, means I have to email to myself, compose the extras, and forward.

The ability to add a header-block to the email, with a polite sign-off, is more likely to engage, than for the recipient to have to start asking unnecessary questions.