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20 Best Email MCP Servers: compared and ranked, November 2026Ranked from 3,360 matching servers on stars, growth, downloads and maintenance. Updated .

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  • A
    license
    Not graded
    quality
    D
    maintenance
    Multi-account IMAP/SMTP email MCP server with 22 tools — read, send, search, organize, thread, attachments, and batch operations. Features connection pooling, rate limiting, retry with backoff, and OAuth2 device-code flow. Written in Go.
    3
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Send email, find out why an email failed, set up sending domains, and manage templates, contacts, lists and campaigns in your AhaSend account.
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Enables MCP-capable AI clients to read and write a self-hosted todo list, quick memos, and a plain-Markdown knowledge base through 16 tools covering search, tasks, notes, and identity checks. Tool visibility is scoped per API key with directory-level permissions, and every call is audit-logged.
    5
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    LLM Optimizer is an AI visibility intelligence platform. It analyzes how large language models and AI search engines perceive, cite, and recommend brands; then provides research-backed optimization strategies to improve that visibility.
    10
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    High-performance MCP data plane server for Nextcloud integration, enabling AI agents to read, write, organize, and manage files and CRM assets over WebDAV and OCS APIs.
    1
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    Enables analyzing sales and stock CSV files to identify what to reorder, how much to buy, when products will run out, and how much inventory is tied up in dead stock. Provides read-only inventory checks and CSV column inspection without uploading data.
    543 npm
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    Enables AI assistants to read, search, organize, and draft email, manage calendar items, and look up contacts through the user's already signed-in classic Outlook desktop app on Windows, with outgoing actions defaulting to drafts for review.
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    Records how any command-line tool behaves (flags, stdin, outputs, exit codes, edge cases) as golden tests, then diffs a Rust or Go rewrite against the original to prove it behaves the same.
    4
    MIT
  • A
    license
    Not graded
    quality
    A
    maintenance
    The Multi DB MCP Server is a high-performance implementation of the Database Model Context Protocol designed to revolutionize how AI agents interact with databases. Currently supporting MySQL and PostgreSQL databases.
    476
    MIT
  • F
    license
    Not graded
    quality
    F
    maintenance
    MCP server exposing JMAP email and Sieve script operations as tools, enabling mailbox management, email creation, search, flagging, and Sieve script management.
    2
    -
  • A
    license
    A
    quality
    A
    maintenance
    Records your terminal sessions per command (PTY + OSC 133) into local SQLite, so AI agents can search, retrieve, and diff what commands actually printed. Secret redaction is applied by default to everything served over MCP.
    4
    7
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    Serves the review notes left at lines of a diff in seam, a terminal diff viewer, to an agent with the code around them. The agent answers each note, and the answer shows in seam at that line.
    2
    3
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    Agentic DevOps control loop and MCP server featuring polyglot Tree-sitter AST blast-radius analysis, OPA Rego policy evaluation, and isolated --network=none Docker test verification[cite: 1]. Exposes tools to inspect impacted dependency closures, validate security guardrails, and run targeted test suites.
    3
    2
    Apache 2.0
  • A
    license
    A
    quality
    B
    maintenance
    PCI DSS v4.0.1 compliance scanner for Go payment services, delivered as an MCP server. Every finding maps to a specific PCI DSS requirement ID. Taint-aware cardholder data flow analysis with PCI SSC FAQ semantics, designed to complement broad SAST tools like Semgrep and CodeQL - not replace them.
    15
    5
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    Turn any OpenAPI/Swagger/Postman spec into an MCP server — give your LLM live access to any API.
    19
    Apache 2.0
  • A
    license
    A
    quality
    A
    maintenance
    Enables AI assistants and local LLMs to interact with BirdNET-Go bioacoustic observatories, providing tools to query recent and historical bird detections, monitor station health, and retrieve audio clips.
    8
    13 npm
    4
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    Radar is an open-source Kubernetes observability and diagnostics MCP server. It exposes cluster health, workload diagnosis, logs, events, topology, audit findings, and remediation actions to AI agents through the Model Context Protocol.
    25
    358 npm
    4,009
    Apache 2.0
  • A
    license
    A
    quality
    A
    maintenance
    Local CI/CD engine for AI agents. ActionD listens to LGH git events and runs plugin jobs (Go/Python/Java/web toolchains) in isolated checkouts, with structured results, root-cause failure diagnosis, approval gates, and auto-rollback. The MCP server exposes 23 tools, including dev_cycle_run (commit → CI → structured verdict in one call) and actiond_diagnose for failed-job analysis.
    22
    MIT
  • A
    license
    A
    quality
    A
    maintenance
    Baryon connects MCP-compatible AI assistants to Proton Mail through a local bridge, enabling email search, reading, attachment handling, and draft creation while enforcing deliberate permission limits. It runs locally and cannot send, delete, or modify mail.
    12
    BSD 3-Clause
  • A
    license
    A
    quality
    A
    maintenance
    Enables AI agents and MCP clients to drive real Chrome, Edge, Brave, and Firefox browsers through native automation protocols. It exposes tools for navigation, page snapshots, form filling, clicks, screenshots, console/network inspection, and tab management.
    23
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    Scans source code for possible Korean compliance risks (PIPA, Network Act, Credit Information Act, E-Commerce Act) and maps findings to specific legal provisions. Runs locally, exposes MCP tools for scanning and law lookup, and does not constitute legal advice. That's hedged (matches the project's "possible risk / not legal advice" rule), keyword-rich for search, and names all four laws.
    4
    1
    MIT