Create 'Contacts' list from 'Companies' list

Need the option to create Active Contacts list based on Active Companies list. Or at least static.

Otherwise I don’t know how to enroll to email sequence all associated contacts in the specific list of companies

I think a great feature would be the ability to build a contact list off of a list of companies. We have access to a list of companies that will be attending an upcoming trade show. We recently sifted through our CRM to see which of these companies we have in HubSpot. We now have a list of companies that we have a relationship with that are attending this trade show. However, we would like to send emails to the contacts at these companies. However, a list of contacts cannot be built using a list of companies and their associated contacts. So, contacts will most likely have to be added manually, and individually which will be really inefficient and also subject to error.

This feature is for people on the marketing team to aid in building lists. This will automate an otherwise very manual process.