Overview
What It Does
Sendmux Send Email packages a focused communication workflow for an AI agent. Send email with Sendmux, including owner-approved Sending-resource smx_agent_ tokens from claim-token exchange. Use when the user wants to send one email, send multiple emails, choose single vs batch sending, add idempotency keys, include attachments, compare HTTP Sending API vs SMTP, or use Sendmux MCP, CLI, SDK, or direct HTTP for outbound email. It is best suited to users who can review the resulting actions and provide only the accounts, files, or command access needed for the task. It is not a substitute for human approval on destructive, financial, security-sensitive, or public-facing actions.
Task ideas
Popular Use Cases
- Draft and organize messages
- Work with communication channels and contacts
- Summarize conversations into next steps
- Automate routine coordination
Installation
Install this Agent Skill
Claude Code
npx skills add https://github.com/Sendmux/skills --skill sendmux-send-emailCommands derived from the public GitHub SKILL.md record. Checked 2026-09-02. Review the source before running them.
Before you start
Requirements
| Claude Code | Required / review |
| Codex | Required / review |
| Public SKILL.md source | Required / review |
| Review instructions and requested permissions before installation | Required / review |
| Paid service | Check source |
| Supported system | Check source |
Popularity context
Why It’s Popular
Sendmux Send Email is a verified Agent Skill from Sendmux with a public SKILL.md, compatible with Claude Code, Codex.
Alternatives
