By in-house I take it you don't want to use a cloud or other service. This means your CIO, IT get to set all this up and again NO ONE OR COMPANY is going to help you get email and other services in such a scenario.
https://www.google.com/search?q=campaign+crm finds such offerings but what you seem to be asking for is the cloud solution without the cloud.
Your CIO and IT have a lot of work ahead of them.
PS. To keep this from being a spam magnet this thread is monitored for spam posts.
I see a lot of Email Campaigns and many CRMs seem to only support this type of campaigning but I'm more interested in setting up a Campaign for my staff to complete. A kind of in house, bulk work load generator for the crew if that makes sense?