Email delivery service with Message Streams feature for separating transactional and marketing emails into parallel infrastructure to maintain deliverability.

Postmark is a fast and reliable email delivery service for developers since 2010. The Message Streams feature allows separation of transactional and promotional emails into completely separate sending infrastructure to protect deliverability of critical transactional messages. Offers Email API, SMTP service, email templates, inbound email, analytics, and webhooks. Trusted by companies including Paddle, Indie Hackers, Faire, IKEA, and many others with billions of emails delivered.
Fast, reliable email delivery service with message streams
G2 Rating
Starting Price
DMARC management platform for email authentication
Founded
Starting Price
DMARC management platform co-founded by one of the original DMARC protocol authors, providing expert guidance on email authentication and enforcement.
DMARC monitoring and email authentication solution
Founded
Starting Price
Cloud-based DMARC management platform providing email authentication configuration, monitoring, and reporting to prevent spoofing and improve deliverability.
The industry leader in email preparation
Email on Acid is a comprehensive automated email pre-deployment platform that helps email developers and marketers test emails across the most popular clients and devices. The platform provides campaign precheck, accessibility testing, and deliverability analysis.