SenderKit
SenderKit lets you build and run transactional and marketing messaging — email, SMS, push, and web-push — straight from ChatGPT and Codex. Draft and manage message templates, send welcome emails, OTP codes, and receipts, monitor every message's delivery status, cancel scheduled sends, and manage inbound email addresses and domains. In Codex, bundled skills also wire SenderKit into your codebase: add a notification flow, integrate the SDK, or diagnose email deliverability and DNS authentication.
Documentation
SenderKit
Transactional notifications that live in a dashboard, not your codebase.
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.
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.
Go from zero to your first send in under five minutes. Create an API key and authenticate requests with a Bearer token. Install@senderkit/sdk and call send().
The raw REST contract behind every SDK and the CLI.