Companies that use Resend

Source: Analysis of Linkedin bios of 149,255 companies that use Resend

I noticed that Resend's customers are predominantly technology companies building software products that require reliable transactional email at scale. These aren't traditional enterprises buying email tools, they're companies shipping software platforms, marketplaces, SaaS applications, and AI-powered products. They build everything from recruitment platforms and HR systems to commerce tools, developer platforms, and fintech solutions. Many operate B2B models serving other businesses with mission-critical software.

These companies span the growth spectrum but cluster heavily in the scale-up phase. I see Series A through Series C funding rounds dominating, with companies employing anywhere from 50 to 1,000+ people. Some like DoorDash and Shopify are post-IPO giants, while others like Lovable and Factory are well-funded early-stage companies building ambitious products. The funding amounts are substantial, often tens of millions, and many emphasize their growth metrics or customer counts as proof of traction.

Source: Analysis of tech stacks from 149,255 companies that use Resend

I noticed that Resend attracts a very specific type of company: modern, developer-first startups building AI-powered products with sophisticated user authentication and aggressive outbound sales motions. These aren't traditional enterprises. They're growth-stage companies that prioritize developer experience and automation across their entire stack.

The pairing with Clerk is particularly telling. When I see Clerk appear 233 times more often, it signals companies that want authentication handled elegantly without building it themselves. Combined with Resend, they're choosing best-in-class developer tools for infrastructure that needs to just work. The HuggingFace correlation reinforces this, showing these companies are building AI features into their products and need reliable email delivery for notifications, summaries, and user engagement around those AI workflows.

The Cold Email Infrastructure correlation is fascinating because it reveals a dual use case. These companies aren't just sending transactional emails. They're running outbound campaigns, likely using Resend's API to programmatically send personalized cold outreach at scale. The presence of Hubspot Sales Hub confirms they have real sales teams working leads, not just product-led growth motions. Github Actions appearing 52 times more often shows they're automating everything, including email workflows directly in their CI/CD pipelines.