Further fixes to properly retrieve all relevant messages - 'participants' was flaky, so replaced with explicitly specifying 'to' and 'cc' clauses
Further fixes to properly retrieve all relevant messages - 'participants'
was flaky, so replaced with explicitly specifying 'to' and 'cc' clauses

mbmccormick/mail2bug,mrpeterson27/mail2bug,Spurrya/mail2bug,vitru/mail2bug