Postmark - Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
SendGrid - Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
JangoSMTP - JangoSMTP is a transactional email delivery service that adds tracking and authentication to email.
SendPulse - Maximizing e-mail marketing open rates automatically