Macintosh has recently updated its operating system and is receiving a good market response. We will be discussing steps today to install Roadrunner Email on the OS X mail app. Roadrunner is an excellent email service that millions of users, both professionally and personally, are currently using. A popular communication-based company, Time Warner Cable (TWC) Internet Service Provider, actually provides Roadrunner service. But only if you are a current user of TWC services can you use the Roadrunner services, and Roadrunner email settings can help you to work.