"Using OpenRouter API to integrate calls to other LLMs on Claude desktop" matching MCP servers:

• send-to-kindle-mcp

  BenjaminBini

  A

  license

  A

  quality

  C

  maintenance

  Sends document files (EPUB, PDF, DOCX, etc.) to your Kindle via email using Amazon's Send to Kindle feature.

  Last updated 2026-06-28

  1

  13

  MIT

• inbox-to-action-mcp

  tarunlnmiit

  A

  license

  A

  quality

  A

  maintenance

  One-pass agentic inbox triage as an MCP server: fetch unread Gmail → classify (action_needed/fyi/newsletter/noise) → summarize → extract tasks → draft replies as Gmail DRAFTS (never sends) → flag calendar → write a triage report. Four stdio tools (fetch_emails, save_gmail_draft, append_tasks, write_report); the host is the LLM, so it runs keyless in Claude Code. Gmail scopes: readonly + compose

  Last updated 2026-07-12

  4

  4

  MIT

• Send to Kindle MCP Server

  wahiggins3

  A

  license

  -

  quality

  D

  maintenance

  A Model Context Protocol (MCP) server that allows Claude Desktop to send documents directly to your Kindle e-reader.

  Last updated 2025-12-15

  2

  MIT

• outlook-desktop-mcp

  jr2804

  -

  license

  -

  quality

  C

  maintenance

  Turns your running Outlook Desktop into an MCP server, enabling email, calendar, tasks, and attachment management through your existing Outlook session without any cloud APIs.

  Last updated 2026-07-22

• claude-gmail-mcp

  pliablepixels

  A

  license

  A

  quality

  D

  maintenance

  A Gmail MCP server that enables Claude to send, search, and read emails using either Gmail API or SMTP/IMAP backend.

  Last updated 2026-04-18

  3

  MIT

• Claude-Read-Outlook

  Zacccck

  A

  license

  B

  quality

  C

  maintenance

  A MCP server for Claude that reads Outlook emails its attachments through the Microsoft Graph API.

  Last updated 2026-06-16

  6

  15

  MIT

• Nylas API MCP Server

  mcpflow

  F

  license

  D

  quality

  D

  maintenance

  Enables to interact with Nylas API for email, calendar, and contacts via MCP, providing documentation, code samples, and code generation tools.

  Last updated 2025-03-17

  3
• 

  Cakemail API MCP Serverofficial

  cakemail

  A

  license

  -

  quality

  F

  maintenance

  An MCP server that provides AI agents with direct access to authoritative Cakemail API specifications, enabling accurate code generation and eliminating hallucination.

  Last updated 2025-10-06

  3

  MIT

• claude-2-mail

  omkargs

  A

  license

  -

  quality

  A

  maintenance

  Local MCP server for reading/sending email via Gmail and managing Google Calendar events, enabling an AI agent to handle email and calendar operations through natural language.

  Last updated 2026-06-23

  1

  MIT

• Claude Email Connector

  MAK-esoft

  F

  license

  -

  quality

  B

  maintenance

  Enables Claude to send emails via Microsoft Graph, with preview and confirmation steps.

  Last updated 2026-07-09
• 

  Sendmux Email Inbox API +official

  Sendmux

  A

  license

  A

  quality

  A

  maintenance

  Sendmux is an email inbox API and email API for AI agents. Use this MCP server to let authorised agents work with Sendmux mailboxes, inbound email, clean JSON parsing, webhooks, outbound sending, provider routing, logs, billing, and team controls.

  Last updated 2026-07-22

  30

  86

  MIT

• gmail-multi-mcp

  Vinksj

  A

  license

  A

  quality

  C

  maintenance

  Connect multiple Gmail accounts to any MCP client, enabling search, read, draft, send, label, and organize mail across unlimited accounts with local-only OAuth token storage.

  Last updated 2026-06-13

  22

  1

  MIT

• Agent 365 Email Draft Proxy

  jamesol-msft

  A

  license

  -

  quality

  D

  maintenance

  Enables Claude Code to search, retrieve, and draft email replies using real Microsoft 365 inbox context, with executive-style profiles and one-click publishing.

  Last updated 2026-02-13

  MIT

• Email Finder API

  Br0ski777

  A

  license

  -

  quality

  B

  maintenance

  Find professional email addresses from name + company domain. Tests 15+ patterns against MX records with confidence scoring, with pay-per-call via x402.

  Last updated 2026-07-19

  MIT

• Email Deliverability Audit API

  Br0ski777

  A

  license

  -

  quality

  B

  maintenance

  Audits email deliverability configuration for a domain, checking SPF, DKIM, DMARC, and MX records, returning a score and recommendations.

  Last updated 2026-07-19

  MIT

• Google MCP Server

  nosferatu-concorde

  A

  license

  -

  quality

  D

  maintenance

  Enables to interact with Google Mail, Docs, Sheets, and Tasks through natural language.

  Last updated 2025-11-23

  8

  MIT
• 

  Cakemail API MCP Serverofficial

  cakemail

  F

  license

  -

  quality

  D

  maintenance

  Enables AI assistants to browse, inspect, and call the Cakemail API via dynamically loaded OpenAPI spec.

  Last updated 2026-04-11

• charity-gmail-mcp

  IgnatRU

  F

  license

  -

  quality

  B

  maintenance

  Enables accessing Gmail tools (search, read, draft) for a specific Google account via MCP, designed as a custom connector for Claude/Cowork to use alongside a different Google account.

  Last updated 2026-07-17

• apple-mail-mcp-server

  wylieswanson

  A

  license

  A

  quality

  C

  maintenance

  An MCP server that provides programmatic access to Apple Mail, enabling AI assistants like Claude to read, send, search, and manage emails on macOS.

  Last updated 2026-07-10

  25

  MIT

• mise-en-space

  spm1001

  A

  license

  A

  quality

  B

  maintenance

  An MCP server that enables LLMs to search, fetch, and act on Google Workspace (Drive, Gmail, Docs, Sheets, etc.) with rich, one-call results and file deposits to disk, reducing context usage.

  Last updated 2026-07-26

  3

  MIT