Open Source Rust MCP Server Gives Claude Full Email Management Capabilities
A developer has created an open source MCP server in Rust that enables Claude to manage email workflows end-to-end, addressing limitations in existing email MCP servers that were read-only, single-account, and lacked OAuth2 support.
Key Features and Capabilities
The server provides Claude with 25 specific tools for email management:
- Full IMAP operations: Search, read (both parsed and raw RFC822 formats), flag, copy, move, delete, and create folders
- SMTP functionality: Compose and send emails with correct threading headers for replies and forwards
- Microsoft Graph API integration: Support for Outlook/365 accounts where SMTP is blocked
- Authentication: OAuth2 device code flow for Google and Microsoft accounts, plus app password support
- Multi-account management: Works with Gmail, Outlook, Zoho, Fastmail, and any IMAP server
Safety and Security Features
The developer implemented several safety measures since the tool gives AI access to email inboxes:
- Write operations are disabled by default and only enabled per-account via configuration flags
- TLS enforcement for all connections
- Credentials are never logged
The developer reports daily use with Claude Code, noting solid performance with multiple accounts handled concurrently without issues. The tool is available under the MIT license at https://github.com/tecnologicachile/mail-imap-mcp-rs.
📖 Read the full source: r/ClaudeAI
👀 See Also
Mengram AI: Auto-Memory Tool for Claude Code Sessions
Mengram AI automatically maintains context between Claude Code sessions by loading cognitive profiles, injecting relevant past context into prompts, and saving new knowledge. It stores semantic, episodic, and procedural memory that evolves based on failures.
Benchmark Results: 15 LLMs Tested on 38 Real Workflow Tasks
A developer benchmarked 15 cloud and local LLMs on 38 tasks from their actual workflow, including CSV transforms, letter counting, modular arithmetic, and format compliance. Claude 3.5 Sonnet and Opus both scored 100%, but Sonnet costs 3.5x less per call.
OpenClaw Multi-Agent Workflow Issues: Stalling, Context Loss, and Token Inefficiency
A developer reports OpenClaw multi-agent workflows frequently stall with agents hanging, experience context leakage despite custom documentation, and consume excessive tokens with no output. The setup used Gemini 3 Pro/Codex models with a COO orchestrator and specialized task agents.
StartClaw: A headless browser automation tool built on ZeroClaw with Claude integration
StartClaw is a browser automation tool built on ZeroClaw's Rust base with Composio v3 for integrations, designed to run headless in the cloud without requiring local hardware. It uses Claude exclusively for reliability and includes built-in context compaction that reduces token usage by ~5x.