Transactional Email Sending
With the Highest Inbox Results
Marketers who want a quick, streamlined experience. Developers who send transactional email through their own applications.
The first transactional email service to add tracking and authentication. Send via SMTP relay servers or use our transactional email API.
Open/click tracking, and Google Analytics integration. Inbox delivery with DKIM, SPF, a tracking domain, and dedicated IP addresses.