Resend Labs, Inc. Due Diligence

Run due diligence on Resend Labs, Inc.: check compliance and get alerts when suppliers or ownership change.

United States · owned by Independent (United States) · resend.com · 32 vendors

Resend is an email API and platform for developers, enabling them to build, test, and send transactional and marketing emails at scale. The company focuses on providing a strong developer experience, ensuring email deliverability, and offering features like React-based email templating.

Resilience scores

Technology vendors

Services catalogue

5 services in catalogue across 2 categories; runs on 32 sub-vendors.

Insights

Last updated 2026-07-02 · revision 7

32 direct vendors, 252 subvendors

Direct vendors by controlling owner country (sample)

Subvendors by controlling owner country (sample)

Compliance

6 in-scope frameworks identified; showing 3.

GDPR (source) — Evidence found

Evidence: https://resend.com/security/gdpr, https://resend.com/legal/dpa, https://resend.com/legal/subprocessors, https://www.dataprivacyframework.gov/

CAN-SPAM Act — Evidence found

Evidence: https://resend.com, https://resend.com/security

CCPA — Evidence found

Evidence: https://resend.com/legal/dpa, https://resend.com/legal/privacy-policy

Financials

Three-year financials

Financial Resilience Score: 6/10

Resend Labs is a private, venture-backed developer-tools startup that does not disclose revenue, operating income, or equity. Assessment relies on qualitative signals rather than audited financials. The company has raised approximately US $24 million cumulatively (seed $3M in 2023, Series A $18M in Dec 2024 led by Andreessen Horowitz, and an additional $3M in Oct 2025), providing reasonable but not extensive capital runway for a ~43-person team in an infrastructure-heavy business. Strengths supporting resilience include top-tier VC backing (a16z, Y Combinator, SV Angel), a marquee angel roster (founders/execs from Vercel, Figma, Sentry, Supabase, PostHog, WorkOS, Mailchimp), explosive user growth (6k waitlist in early 2023 to 3M users by June 2026), a product-led growth engine anchored by the React Email open-source library (300k+ weekly npm downloads), enterprise-ready compliance (SOC 2 Type II, GDPR), marquee logos (Warner Brothers, Decathlon, Vercel, Raycast, Supabase), and cash strength sufficient to complete two acquisitions (Mergent Apr 2025, Briefer Aug 2025). Key risks include the absence of any public financial data (revenue scale, gross margin, burn, and runway cannot be verified), intense competition from entrenched incumbents (SendGrid/Twilio, Postmark, Mailgun/Sinch, Amazon SES, Loops, Mailtrap), deliverability/blocklisting incidents that have occurred multiple times (Jan/Feb 2024, Nov 2025, Feb 2026) posing existential/reputational risk, heavy concentration on a single core product line, and a moving regulatory target with tightening bulk-sender rules from Gmail, Yahoo, and Microsoft.

Key strengths: ~US $24M cumulative equity funding raised (seed 2023, $18M Series A 2024, $3M 2025), Top-tier VC backing led by Andreessen Horowitz and Y Combinator, Strong angel roster from Vercel, Figma, Sentry, Supabase, PostHog, Mailchimp, WorkOS, Explosive user growth: 100k (Apr 2024) to 3M (Jun 2026), React Email open-source funnel with 300k+ weekly npm downloads, SOC 2 Type II and GDPR compliance achieved, Marquee customers including Warner Brothers, Decathlon, Vercel, Raycast, Supabase, Two acquisitions completed in 2025 (Mergent, Briefer) indicating cash strength, Named to Redpoint InfraRed 100 (Jun 2024)

Risk factors: No public financials — revenue, EBIT, equity, burn, and runway unknown, Intense competition from SendGrid/Twilio, Postmark, Mailgun, Amazon SES, Repeated deliverability/outage incidents (Jan 2024, Feb 2024, Nov 2025, Feb 2026), Heavy product concentration on transactional/marketing email API, Regulatory/deliverability moving target (Gmail, Yahoo, Microsoft bulk-sender rules), Small headcount (~43) supporting infrastructure-heavy business, Series A vintage Dec 2024 — runway dependent on undisclosed revenue traction

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