Skills do not grant Sendmux access by themselves. Create API keys or authorise
Product MCP separately, then let the skill choose the right surface for the task.
Install
Install the full pack with theskills CLI.
skills add. Upload a zipped individual skill folder through Settings -> Capabilities/Features.
Supported targets
| Agent target | Project path | Global path |
|---|---|---|
| Claude Code | .claude/skills/ | ~/.claude/skills/ |
| Cursor | .agents/skills/ | ~/.cursor/skills/ |
| Codex | .agents/skills/ | ~/.codex/skills/ |
| GitHub Copilot / VS Code | .agents/skills/ | ~/.copilot/skills/ |
| Windsurf | .windsurf/skills/ | ~/.codeium/windsurf/skills/ |
| Gemini CLI | .agents/skills/ | ~/.gemini/skills/ |
| Cline | .agents/skills/ | ~/.agents/skills/ |
What the pack teaches
| Skill | Use when |
|---|---|
sendmux-getting-started | Choosing a Sendmux surface, setting up authentication, or making a first verified call. |
sendmux-send-email | Sending one transactional email or batching multiple sends. |
sendmux-mailbox-agent | Reading, triaging, replying from, or syncing one mailbox. |
sendmux-management | Managing domains, mailboxes, sending accounts, webhooks, billing, and logs. |
sendmux-cli | Running Sendmux commands from a terminal. |
sendmux-mcp-setup | Connecting Sendmux MCP servers to an agent client. |
sendmux-token-efficient-usage | Choosing low-token calls such as batch sends, counts, snippets, deltas, cursors, and conditional requests. |
sendmux-email-for-agents | Giving an AI agent an inbox, a send-receive workflow, or a human-approved draft flow. |
Choose the right surface
| Task | Default path |
|---|---|
| Agent already has Sendmux MCP connected | Use the relevant MCP tool first. |
| Terminal one-shot or scripted admin work | Use the sendmux CLI. |
| Application code | Use an SDK package. |
| Endpoint detail or uncommon operation | Use the API reference. |
smx_mbx_ keys for Sending and Mailbox work. Use team-scoped smx_root_ keys for Management work.
Next steps
MCP
Connect hosted or local Sendmux MCP tools.
CLI
Run Sendmux workflows from your terminal.
SDKs
Choose an SDK package for application code.
API keys
Create scoped credentials for tools and agents.