FanBridge is an affordable email and social marketing suite for musician, managers, and really, anyone building a fan base. FanBridge makes available a respectable set of tools for the average Joe to market their music and gigs to their fan base. Though other platforms are certainly more fully-featured, FanBridge offers a nice balance of price and power, and its focus on email marketing means it does well for that specific purpose.
Fanbridge has three tiers of service, Silver ($15.99/month), Gold ($39.99/month) and Platinum ($103.99/month). Most musicians will be fine with the Silver package, which is good for up to 2,000 social and email followers.