Ask HN: How to get service provider in front of enterprise CEO/CTO

I work at a Mac Service provider, and we are now targeting enterprise clients. Which is a whole new ball game in terms of getting them to even look and consider us as a support service provider for all their mac gear. I have been asked to take over the marketing side of things and i am having a hard time thinking up some ideas. As the things we usually do to get in front of potential clients wont work, such as maildrops. We really need to get our business into the eyes/minds of the higher ups such as the CEO or CTO otherwise nothing really ever happens.

Does anyone have any ideas of experience on how to get a support service provider into the eyes/mind of the higher ups at an enterprise level business?