Internal Company Contacts excluded from Marketing Contacts

There are many companies that use their hubspot account to send internal newsletters to their employees, but the goal is to build company culture and inform people of news, not for commercial purposes. For this reason, I would like to suggest “Internal Company Contacts” as a new type of contact instead of paying for your own employees as Marketing Contacts. This could be related to the email domain of the portal itself, for example. It would be great to have these differentiated types of contacts and not have to pay for them.
I know there is an option to send internal emails from workflows but you have to add all email addresses manually, you can’t use lists, and this is neither simple nor feasible for large companies.

Thanks!

International Marketing