SendWithUs - Take control of your transactional email. sendwithus is the missing tool for marketers to manage and optimize transactional emails.
Amazon SES - Scale your business email & marketing messages with Amazon Simple Email Service (SES), a cost-effective and reliable cloud email service. Sign up today.
RealTime Email - RealTime Email provides email relevance by enabling marketers to respond to each recipient’s personal context.
SMTPProvider - SMTPProvider offers SMTP server with a mailing software for mass promotional & transactional emailing.
Aritic Mail - Ariticmail is a transactional email delivery API for applications and enterprises.
Mandrill - Mandrill is a new way for apps to send transactional email. It runs on the delivery infrastructure that powers MailChimp.