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Email sending platform for developers.

Last updated September 11, 2026

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Nov 4, 2026
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Nov 4, 2026

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Overview

Resend is an American software company that describes itself as building a modern email sending platform. According to its About page, it started with an open source project in 2022, launched an entire email sending platform in 2023, and joined Y Combinator's winter batch. Its homepage states that it delivers transactional and marketing emails at scale and offers SDKs for multiple programming languages.

History

Resend's About page states that the company started with an open source project in 2022, driven by frustration over building modern email templates that worked across email clients. It says the team then identified sending emails that reach the inbox as the biggest pain point and explored something new. In 2023, it launched an entire email sending platform and joined Y Combinator's winter batch. The About page names three founders: Zeno Rocha, Bu Kinoshita, and Jonni Lundy.

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