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.
Yesmail - Yesmail provides email marketing solutions that integrate mobile, web, and social channels for marketers.
MailPlus - MailPlus is a Dutch-based email marketing solution provider.
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.
SendGrid - Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free