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!
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Gmail Mail Merge - Send personalized emails with attachments
Groupmail - Groupmail is an email marketing platform enabling marketers to create newsletters, track email marketing campaigns and gain insights.
SmartrMail - SmartrMail is the easiest way to send best practice newsletters and automations for your store
.meteoremails - Send cold emails for free! Free and open source project