The privacy-first email MCP server for Claude Code, Cursor, and every MCP-compatible AI client. Gmail + Outlook. BYOK AI chat. Desktop dashboard. One install.
Talk to your inbox in natural language. Bring your own Claude, OpenAI, or Ollama key. Your key, your provider, your data.
Gmail and Outlook today. IMAP and JMAP coming. One tool layer, any email provider.
Tauri-powered native app. 10MB install, 30MB RAM. Inbox, compose, filters, labels, batch ops, AI chat — all local.
No analytics. No tracking. No phone-home. Your email stays between you and your provider. Read the source.
Email MCP servers are broken.
The biggest one (1.1K stars) is archived. 72 PRs sit unmerged. Bugs go unfixed.
The rest cover 12–30 tools, support one provider, and call it complete.
None of them have encryption, rate limiting, or multi-account support.
PRISM covers everything.
92 tools across 14 categories. Gmail + Outlook. Every API endpoint.
AES-256 encrypted credentials. Rate limiting. Audit logging. Multi-account.
Plus a desktop dashboard and BYOK AI chat for natural language email management.
Every email API endpoint, organized and documented.
Send, read, search, modify, trash, batch ops
List, get, archive, labels, batch modify
Vacation, IMAP, POP, language, signatures
Create, update, delete, list, batch create
Aliases, signatures, defaults, verify
Create, read, update, delete, send
Get profile, push notifications, quota
Add, remove, list, verify access
Create, get, list, delete rules
Get, create, update, verify, list
Multi-account add, switch, list, remove
Backup messages, threads, raw RFC2822
Download, list, get metadata
List changes, sync with history ID
No analytics. No tracking. No phone-home. No data collection. No usage metrics.
Your email stays between you and your email provider's API. Period.
Don't take our word for it — read the source.
Honest comparison. Real numbers.
| Feature | PRISM | GongRzhe | google_workspace_mcp |
|---|---|---|---|
| Email Tools | 92 | 12 | 30 |
| Multi-Provider | ✓ Gmail + Outlook | Gmail only | Google only |
| AI Chat (BYOK) | ✓ | ✗ | ✗ |
| Desktop Dashboard | ✓ | ✗ | ✗ |
| Actively Maintained | ✓ | ✗ Archived | ✓ |
| Zero Telemetry | ✓ | ? | ? |
| Multi-Account | ✓ | ✗ | ✗ |
| Encrypted Credentials | ✓ AES-256 | ✗ | ✗ |
| Rate Limiting | ✓ | ✗ | ✗ |
Data as of March 2026. We update this monthly.
45 tools free forever. Upgrade when you need more.
Three steps. No configuration files. No Docker. No fuss.
Install PRISM
npm install -g @synthcorp/prism Authenticate
prism auth Opens browser for OAuth. Credentials encrypted locally with AES-256.
Add to your MCP config
{
"mcpServers": {
"prism": {
"command": "prism"
}
}
} Works with Claude Code, Cursor, Windsurf, and any MCP client.