SDKs & integrations
Use the official Lettermint SDKs and integrations to send email from your application. See the integration overview for supported platforms.
The Node.js, PHP, Python, Go, Java, .NET, Elixir, and Rust SDKs support the Sending API and Team API. Use the Team API quickstart for team operations.
Official SDKs
SDK upgrade guides
Moving to a new major version? Each SDK repository has an upgrade guide with every breaking change and a ready-to-copy prompt for coding agents:
Official integrations
Listmonk
Configure SMTP, bounce webhooks, and campaign IDs.
Developer tools
CLI
Send email, inspect messages, and forward webhooks to localhost from your terminal.
MCP server
Connect an AI client to Lettermint with OAuth and your team permissions.
Community SDKs & integrations
Email SDK adapter
@opencoredev/email-sdk/lettermint
Upyo Lettermint transport
@upyo/lettermint
To submit an SDK or integration, email help@lettermint.co with the package name, repository, and documentation link.