Elevatr Email Marketing Automation - Fast and easy email marketing software
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
Grade My Email - Helps you get out of the spam folder.
GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
Email Marketing Academy from MailerLite - Learning platform for email marketing expert certification
Email Marketing: A Beginner's Guide - Master email marketing with these 3 short ebooks from Drip.