HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
SendOut - Affordable email marketing for bloggers and influencers
Email Marketing: A Beginner's Guide - Master email marketing with these 3 short ebooks from Drip.
Mailblast - Email marketing on a budget using Amazon SES
Elevatr Email Marketing Automation - Fast and easy email marketing software
Platformly - Platformly is a suite of tools for multi-channel marketing automation.