One of the most popular and performant email delivery services. Offers a free tier that includes 100,000 free emails per month (25,000 daily limit).
Mailgun
Powerful APIs that enable you to send, receive and track email effortlessly.
10,000 free emails per month.
Exclusive feature: email validation.
FileMaker
Service for fmFlare functions are a wrapper for native FileMaker functions and/or scripts instead of an external service or API.
Mandrill
Mandrill is a paid transactional email API add-on for MailChimp users. It’s reliable, powerful, and ideal for sending data-driven emails, including targeted e-commerce and personalized one-to-one messages. Pick Mandrill if you’re already a MailChimp user.