Best email API for Claude Code
Transactional email and messaging APIs, compared on official plugins, MCP servers and skills. Click a column to sort.
We track 4 email API tools. 2 ship an official Claude Code plugin, 4 have an official MCP server, and 3 bundle skills that teach the agent current SDK patterns. Each score links to the plugin files or vendor docs it is based on.
| Tool ↕ | Fit ↕ | Plugin ↕ | MCP ↕ | Skills ↕ | Why |
|---|---|---|---|---|---|
| 5/5 | Yes | Yes | Yes | Official Anthropic-marketplace plugin with MCP server + 5 skills | |
| 5/5 | Yes | Yes | Yes | Official Anthropic-marketplace plugin with MCP server + 57 skills | |
| 3/5 | No | Yes | No | Official MCP server (24 tools) but no Claude Code plugin or skills found | |
| 2/5 | No | Docs-only | Unknown | Twilio's official MCP only searches docs (incl. SendGrid); no official sending MCP |
All email API tools
Resend
Email & SMS
Official Anthropic-marketplace plugin with MCP server + 5 skills
Twilio
Email & SMS
Official Anthropic-marketplace plugin with MCP server + 57 skills
Postmark
Email & SMS
Official MCP server (24 tools) but no Claude Code plugin or skills found
SendGrid
Email & SMS
Twilio's official MCP only searches docs (incl. SendGrid); no official sending MCP
No tools match those filters.
Email API comparisons
Setup guides
Frequently asked questions
Based on official integrations, the highest-rated email & sms options right now are Resend and Twilio (5/5). Scores reflect Claude Code support only, not overall product quality.