Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
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.
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.
Zoho Campaigns - Smart email marketing software that helps you reach your target audiences, engage in a personalized way, and grow your brand presence.
Litmus - litmus tests and tracks your email campaigns, so you can always put your best design forward.