Mailmeteor - Send hundreds of personalized emails with Gmail.
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
Mailazy - Modern Email Delivery API
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!
Platformly - Platformly is a suite of tools for multi-channel marketing automation.
Vero Newsletters - The first "baseless" email marketing tool.