We frequently create forwards inside the tickets, addressed to partner companies or other 3rd parties and wait for their reply in order to solve the ticket. When we send those forwards we also set the ticket in a custom pending status.
I am trying to create a rule that reopens a ticket when it is in that status and a 3rd party replies but I am missing the options to properly do it.
I would like to have the option to filter events generated by 3rd parties, as per the bellow image:

In fact, I believe that5 filters in total ( the 3 existing plus 2 new ) are needed:
- Anyone
- Requester
- CCs ( all carbon copy recipients of the original requester email )
- Agent
- 3rd Parties ( new - all others, meaning anyone that is not the Requester, one of the CC recipients, or one of the Agents )


