Skip to main content
SendFlit sends transactional email, such as receipts, password resets, and notifications, through a REST API, SDKs in eight languages, SMTP, and an MCP server for AI agents.

Quickstart

Verify a domain, create a key, and send your first email in about 15 minutes.

Tutorials

Build a welcome email, handle bounces with webhooks, and use templates.

SDKs

Official clients for Node.js, Python, Go, Ruby, PHP, Java, and .NET, plus React email components.

API reference

Endpoints, authentication, errors, limits, and webhook events.

​
How it works

  1. Verify a domain. Publish three DNS records so receiving servers trust your mail. See Domains.
  2. Create an API key. Choose the smallest scope the key needs. See API keys.
  3. Send. Call the API, an SDK, or SMTP. Each send returns an id you can track.
  4. Listen. Subscribe to webhooks for delivery, bounce, and complaint events, and suppress addresses automatically.

​
Choose how to integrate

​
SDK install status

A package’s install command fails with “not found” until it’s published. Check this table for the current state.