HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
SaaS Email Marketing Handbook - Double Your MRR With Email Marketing
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!
Elevatr Email Marketing Automation - Fast and easy email marketing software
Grade My Email - Helps you get out of the spam folder.
Email Marketing Academy from MailerLite - Learning platform for email marketing expert certification