Need to send "High" and "Critical" priority only in email subject line itself I'm using Support Ticket System module and I need to send ticket "High" and "Critical" priority along with subject line of an email. Can i do the same through coding part as i have tried from mail settings tab of support ticket system, help if anyone have an idea.

Thanks.
A possible solution might be to use hook_mail_alter to modify the subject. As far as I have seen, the Support Ticket System uses drupal_mail() to send notifications, so this hook would be invoked.

Hope it helps,