Gerrit mail header X-Gerrit-MessageType

Values for the field X-Gerrit-MessageType based on my email inbox and Gerrit source code (gerrit-server/src/main/java/com/google/gerrit/server/mail/send/* classes):

• abandon
• addkey
• comment
• deleteReviewer
• deleteVote
• merged
• newchange
• newpatchset
• registernewemail
• restore
• revert
• setassignee