SendOut - Affordable email marketing for bloggers and influencers
Mailzak - Give a boost to your #EmailMarketing
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
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!
rasa.io - Get more from your email list.
Mailazy - Modern Email Delivery API