Does Campaign Monitor have the ability to create one Master Template within our admin and have it feed the same content into our sub-accounts? (we have white labeled content that we allow our clients to use across the board) The templates for each client would be unique except for the article content. If not, are there other services that provide it?
In Campaign Monitor each client is completely separate, so they have their own templates, and it isn't possible to share them between clients (unless you manually upload them).
I'm not sure if other services provide that kind of option though.