sessy
Open-source email observability for AWS SES
Sessy is an open-source email observability platform for Amazon SES that includes a built-in MCP server for AI agent integration. It provides a web interface and API to track email deliveries, bounces, complaints, opens, clicks, and other SES events without relying on expensive third-party email services. AI coding agents can connect to Sessy's read-only MCP endpoint to search email events, inspect message delivery timelines with bounce diagnostics, and retrieve aggregate statistics.
Key Features
Use Cases
- 01Query email delivery status and bounce reasons through Claude Code or Cursor while debugging
- 02Monitor SES campaign performance by asking AI agents to pull aggregate open and click statistics
- 03Investigate email deliverability issues by having agents search for specific bounce patterns
- 04Automate email health checks by connecting AI assistants to track complaint rates and delivery metrics
- 05Generate reports on email engagement trends using agent queries against historical event data
- 06Troubleshoot individual message failures by asking agents to inspect full delivery timelines
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sessy — FAQ
What is Sessy and what does it do?+
Sessy is an open-source email observability platform for AWS SES that tracks all email events (deliveries, bounces, opens, clicks, complaints) through a web interface. It includes an MCP server that lets AI coding agents query your email data programmatically.
How do I connect Sessy to Claude Code?+
First, create an API key on the API Keys page in Sessy's web UI. Then run 'claude mcp add --transport http sessy https://your-sessy-host/mcp --header "Authorization: Bearer YOUR_API_KEY"' to connect Claude Code to your Sessy instance.
Which AI clients work with Sessy's MCP server?+
Sessy's MCP server works with AI coding agents including Claude Code, Cursor, and Codex. Any MCP-compatible client can connect using the HTTP transport with bearer token authentication.
Do I need AWS SES configured to use Sessy?+
Yes, Sessy is designed to work with Amazon SES as your email service. You need an AWS account with SES configured, and Sessy provides a setup guide in its documentation to help with the AWS configuration.
Is Sessy free to use?+
Yes, Sessy is open-source software released under the O'Saasy License and free to self-host. You only pay for the underlying AWS SES usage and any infrastructure costs to run the Docker container.
What if I use Cloudflare or a CDN in front of Sessy?+
You must exempt the /mcp path from bot protection or managed challenges, as these will block MCP client requests. API key authentication handles security independently of CDN-level protections.
How do I install sessy?+
Open the source repository on GitHub and follow its README. sessy is a mcp server — MCP Agents Market links you directly to the official repo.
Is sessy free?+
sessy is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.