Zoho Campaigns - Smart email marketing software that helps you reach your target audiences, engage in a personalized way, and grow your brand presence.
EmailOctopus - Email marketing for less, via Amazon SES
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Mailjet - All-in-one email service provider that provides maximum insight and deliverability results for both marketing and transactional emails.
.meteoremails - Send cold emails for free! Free and open source project
MoonMail - MoonMail is the easiest email marketing platform. Create, design and analyze your Email Marketing campaigns in a minute.