Postmark

About the program

Postmark is a transactional email delivery service built for speed and reliability, consistently achieving industry-leading inbox delivery rates. Unlike bulk email services, Postmark is purpose-built for transactional messages — password resets, receipts, notifications, and onboarding emails — with a focus on inbox placement and deliverability transparency. The referral partner program pays 20% recurring commission for 12 months on all charges, including overages and add-ons. The program is managed through Rewardful with a $100 minimum payout via PayPal. This is a real affiliate program with a public application page.

Good fit when

• Sending password reset, email verification, and account confirmation emails
• Delivering invoices, receipts, and billing notifications reliably to the inbox
• Replacing an unreliable SMTP server with a managed transactional email service
• Tracking email open and click rates for onboarding and notification sequences