Copydue - Top writers, on-demand for as low as $150/mo
InboxVudu - Spend 90% less time on e-mail.
Mailbutler - Mailbutler adds lacking functionality to email clients and increases your productivity
ContentFly - Simple and reliable content ordering platform for busy marketers. Only pre-vetted writers from USA & Canada and 14-day money-back guarantee.
Cold Email Hacks - Proven cold email templates and tactics for B2B startups
PubLoft - Freelancer network for writers powered by the gig economy