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!
SendOut - Affordable email marketing for bloggers and influencers
Google Sheets Email Marketing - Email automation and validations directly from Google Sheets
Mailzak - Give a boost to your #EmailMarketing
Elevatr Email Marketing Automation - Fast and easy email marketing software
Mailblast - Email marketing on a budget using Amazon SES