Helo

Helo is an innovative email API designed specifically for developers and platforms that manage email sending on behalf of their customers. Developed by former Postmark team members, it emphasizes deliverability and sender reputation management by containing bad senders and allowing customers to send from their own domains. Its architecture supports separate tenant data, including stats, unsubscribes, and credentials, making it ideal for SaaS providers and email service platforms. With robust features like REST API, SMTP, SDKs in popular languages, and dedicated infrastructure for transactional and broadcast emails, Helo offers a comprehensive solution for scalable email delivery. Its usage-based pricing model starts at just $0.00035 per email, making it accessible for various business sizes. Overall, Helo combines developer-friendly integrations with essential email management features, making it a compelling choice for businesses seeking reliable email delivery with granular control.