OpenSend CLI

Command-line workflows for OpenSend.

A first-party CLI is not the primary supported interface yet. Use SDKs, REST, MCP, and Docker Compose workflows for now.

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This page is intentionally concise. Use the neighboring guides below for the next implementation details, route contracts, or operational steps.

Send emails with Sinatra

Use the Ruby SDK from Sinatra routes or background jobs.

Send email with SMTP

Send email over SMTP through the built-in OpenSend relay using an API key as the password.

Integrations

OpenSend currently ships one app connector: the webhook / Zapier-style outbound

MCP Server

Use OpenSend from MCP-compatible AI clients.

AI Onboarding

Onboard coding agents to OpenSend.

Agent Email Inbox Skill

Build an agent inbox on top of OpenSend receiving without exposing raw mailbox access to the agent runtime.