Customer.io

Freemium

Automated messaging across email, push, SMS and in-app.

Alternatives & related tools

The email API for developers, built on React Email.

The independent publishing platform for creators and newsletters.

The email-first operating system for creators, now Kit.

The all-in-one email marketing and automation platform.

The newsletter platform built for growth, by Morning Brew alums.

Publish a newsletter and build a subscription audience.

A better way to send product and marketing emails for SaaS.

Email marketing tools to grow your audience affordably.