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Your transactional templates — welcome emails, password resets, billing notices — usually live in your repo as React Email components, MJML, or string literals scattered across route handlers. Every copy tweak becomes a pull request, a redeploy, and a developer in the loop. SenderKit moves the template out of the codebase and into a dashboard with versioning and environments. You integrate the send call once; after that, changing the wording never touches your code.

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Who it’s for

Solo founders and teams of five or fewer shipping modern web apps — Next.js, Clerk or Auth.js, Stripe, Supabase or Neon. Teams that ship in days, not months, and don’t want a notification system to babysit. If your designer, support lead, or non-technical co-founder should be able to fix a typo in the welcome email without opening an editor, SenderKit is for you.

Quickstart

Go from zero to your first send in under five minutes.

Authentication

Create an API key and authenticate requests with a Bearer token.

TypeScript SDK

Install @senderkit/sdk and call send().

API Reference

The raw REST contract behind every SDK and the CLI.