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SendGrid
Email API and marketing campaign tools, now part of Twilio
Email and MessagingEmail delivery at scale
12 tools like Loops, chosen by what they do. About Loops

Email API and marketing campaign tools, now part of Twilio

Email API for sending, receiving and tracking transactional mail

Email API, SMTP and test sandbox for developer and product teams


API for email, calendar and meeting data across providers

Unstyled React components for building email templates

Transactional email delivery service with an API, SMTP and templates


Open source email platform for transactional and marketing email

Email, SMS and CRM tools for marketing and transactional messages
