Templates by Email Monster - Hundreds of free, responsive email templates. Pick and edit.

ChurnKit - Find out who removed your service from their website.

MJML - The open source framework for responsive emails

Lookback Live - Real-time user research on mobile and desktop 🕵 ✍️

Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.

ChurnBuster - Stop Losing Money toFailed Payments in Stripe. Churn Buster saves you thousands of dollars every month by ensuring your customers update their payment information.