Primebox will retrieve replies from all contacts in your Salesforge contacts list, regardless of whether those contacts are currently in a sequence or not.

Also all replies from @company.com will be fetched, meaning if you have [email protected] in your contacts list, then replies from anyone from @google.com will the fetched too regardless if that other person is in your list or no, so if [email protected] replies, you will see that reply in Primebox even if [email protected] is not in your list because [email protected] is in your list.