Email API provider Resend has acquired Briefer, an open-source data analytics platform founded by Elastic and ML infrastructure veterans. The acquisition aims to integrate Briefer's petabyte-scale data processing capabilities into Resend's infrastructure as it scales to handle billions of emails weekly. Briefer's entire codebase will be open-sourced before sunsetting in November 2025.
Email infrastructure platform Resend has taken a major step in its scaling journey with the acquisition of Briefer (YC S23), an open-source data analytics specialist. The move comes as Resend processes terabytes of email data weekly, with performance demands growing alongside its user base.
"Fast data processing, analysis, and storage have become crucial as our users continue to grow," stated Resend in the announcement. Briefer brings critical expertise in handling massive datasets—a capability forged by founders Lucas da Costa (Elastic veteran and Chai.js/Sinon.js maintainer) and Lucas Vieira (machine learning infrastructure specialist from Joga).
Briefer's co-founders bring deep expertise in scaling open-source infrastructure and machine learning systems.
Briefer solved a pressing industry challenge: helping companies move beyond simplistic dashboards when dealing with petabyte-scale datasets. Their platform combined SQL and Python within an AI-powered interactive workspace for:
- Exploratory data analysis
- Rapid model prototyping
- Dynamic dashboard creation
- Building full data applications
As an open-source product, Briefer rapidly gained traction with over 4,000 GitHub stars and enterprise clients including VTEX, Whop, and Incognia. Its architecture excelled at transforming raw data into actionable insights—exactly the capability Resend needs as it scales toward processing "the next billion emails."
Strategic Integration Timeline
- 90-day support period: Briefer remains operational for existing users
- Full open-sourcing: Briefer's entire codebase (including enterprise features) will be released publicly
- November 5, 2025: Briefer platform sunset as engineering efforts shift to Resend integration
This acquisition signals Resend's commitment to infrastructure that doesn't just deliver emails, but provides deeper intelligence about delivery patterns, performance bottlenecks, and user engagement metrics. For developers relying on Resend's APIs, the integration promises more sophisticated analytics capabilities without compromising the speed that defines Resend's service.
The Briefer team will focus on rebuilding Resend's data pipeline from the ground up—transforming raw email metrics into actionable insights at petabyte scale. As transactional email becomes increasingly data-intensive, this merger represents more than an infrastructure upgrade; it's a fundamental shift toward AI-driven observability for communication platforms.
Source: Resend Acquires Briefer
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