Precedence: header in email

Question

My web application sends email fairly often, and it sends 3 kinds of emails: initiated by user, in response to an event in the system, and in automatic response to an email

Answer 1

You can set these headers:

Precedence: bulk
Auto-Submitted: auto-generated

Source: http://www.redmine.org/projects/redmine/repository/revisions/2655/diff