About MailRate

Our Mission

MailRate was built to solve a simple problem: email marketers needed a fast, reliable, and privacy-respecting way to calculate their core campaign metrics without relying on clunky spreadsheets or bloated CRM dashboards.

Our mission is to provide the most accurate and user-friendly email engagement calculator suite on the web, entirely for free.

Why We Built This

With the introduction of Apple Mail Privacy Protection (MPP), traditional Open Rates became distorted. Marketers were suddenly flying blind. We built MailRate to not only calculate standard metrics (Open Rate, CTR, CTOR) but also to provide tools—like our Apple MPP Filter and Growth Simulator—that help you navigate modern email marketing challenges.

Open and Free

We believe essential utilities should be accessible to everyone. That's why MailRate is completely free to use. All calculations are performed instantly in your browser—meaning your campaign data never touches our servers.

Get in Touch

We're always looking to improve our tools. If you have feedback, feature requests, or just want to say hello, feel free to contact us.