I've managed to configure Request Tracker 4.2.8 to create tickets via email. Can ticket attributes (owner, due date, custom fields, admin cc etc.) be specified in the email? If so, what plugins needs to be added?
There are two extensions that are most helpful for setting ticket metadata via email. RT::Extension::CommandByMail allows you to set all of the core ticket data like Owner, Dates, etc. RT::Extension::ExtractCustomFieldValues is very flexible and allows you to set custom fields by matching text in the incoming email body.