"How to send an email to someone else" matching MCP servers:

• Dechonet MCP

  node-man

  A

  license

  A

  quality

  A

  maintenance

  Domain security reconnaissance for AI agents — 13 tools (DNS+DNSSEC, SSL/TLS, HTTP security headers, SPF/DKIM/DMARC email auth, port scan, ASN, RDAP/WHOIS) plus a one-shot security_scan returning a 0–100 Health Score (A–F). Free, no API key.

  Last updated 2026-06-17

  13

  95

  1

  MIT

• firewalla-mcp-server

  productengineered

  A

  license

  A

  quality

  D

  maintenance

  A read-only MCP server that enables Claude to audit Firewalla network security configurations and monitor network activity. It provides tools to inspect devices, rules, alarms, and traffic flows without making any changes to the Firewalla system.

  Last updated 2026-07-16

  8

  273

  MIT

• intodns-mcp

  RoscoNL

  A

  license

  A

  quality

  A

  maintenance

  MCP server for IntoDNS.ai providing 36 free tools for DNS, DMARC, SPF, DKIM, BIMI, DNSSEC, MTA-STS, FCrDNS, blacklist and email security checks. Citation-grade report snapshots with content hashes. No API key required.

  Last updated 2026-07-17

  36

  158

  2

  MIT

• @oksigenia/checker-mcp

  OksigeniaSL

  A

  license

  A

  quality

  B

  maintenance

  A domain security and privacy checker MCP server that runs locally, performing DNS, TLS, HTTP, and RDAP lookups to generate a scored report covering certificates, email authentication, DNS, and web security headers.

  Last updated 2026-07-22

  2

  3

  253

  GPL 3.0

• Domain Deliverability Checker

  mambalabsdev

  A

  license

  A

  quality

  A

  maintenance

  Enables auditing any domain's email deliverability and DNS health, including SPF, DKIM, DMARC, MX, mail provider, DNS blacklist status, catch-all, domain age, and a deliverability score.

  Last updated 2026-07-17

  1

  64

  1

  MIT

• rustunnel-mcp

  joaoh82

  A

  license

  A

  quality

  A

  maintenance

  MCP (Model Context Protocol) server for rustunnel. Lets AI agents (Claude Code, Cursor, Windsurf) create and manage public tunnels to local services from inside an agent session.

  Last updated 2026-07-14

  6

  645

  AGPL 3.0

• fwrule-mcp

  AutomateIP

  A

  license

  A

  quality

  D

  maintenance

  An MCP server that analyzes firewall rule overlap, duplication, shadowing, and conflicts across multi-vendor firewall policies.

  Last updated 2026-03-26

  4

  1

  Apache 2.0

• vpn-mcp

  cheeeee

  F

  license

  A

  quality

  D

  maintenance

  Enables AI coding assistants to access the internet through VPN exit nodes to bypass geo-restrictions and avoid rate limits. It allows users to route HTTP requests through various global regions and manage VPN connections directly within MCP-compatible clients.

  Last updated 2026-03-26

  8

• ip-doctor

  Baneado98

  A

  license

  A

  quality

  B

  maintenance

  MCP server for live IP and domain reputation checks via DNS lookups, providing abuse scores and network type without requiring an API key.

  Last updated 2026-06-23

  2

  MIT

• domain-security-mcp-server

  OrtaMarco

  A

  license

  A

  quality

  C

  maintenance

  Enables AI agents to audit email and domain security (SPF, DKIM, DMARC, etc.) for any domain without requiring API keys.

  Last updated 2026-06-07

  19

  MIT

• Branch Diagnostics MCP

  Fromzy1

  A

  license

  A

  quality

  C

  maintenance

  An MCP server that enables AI assistants to diagnose network and service problems by walking a structured funnel of cURL timing metrics, identifying which hop is at fault, and providing targeted recommendations.

  Last updated 2026-06-24

  4

  MIT

• mailX tools

  Mailwarm

  A

  license

  A

  quality

  D

  maintenance

  MCP server for email deliverability: validate SPF/DKIM/DMARC/BIMI, check blacklists, test SMTP/IMAP, look up DNS, and generate ready-to-deploy records for any major email provider. Ships with two one-click prompts (audit-deliverability, setup-dns). Public, no auth.

  Last updated 2026-04-17

  17

  MIT

• hunter-mcp

  PiggyHurry

  A

  license

  A

  quality

  C

  maintenance

  An MCP server for querying the Qianxin Hunter network asset mapping platform, enabling asset search, batch queries, and export tasks.

  Last updated 2026-05-24

  4

  3

  MIT

• Modal MCP

  george-bobby

  A

  license

  A

  quality

  B

  maintenance

  An MCP server for managing Modal — apps, containers, volumes, and secrets — and for deploying & running Modal apps directly from Claude Code and other MCP clients.

  Last updated 2026-06-11

  26

  MIT

• vyos-mcp

  cacack

  A

  license

  A

  quality

  B

  maintenance

  An MCP server for managing VyOS routers via the HTTPS REST API, enabling configuration changes, operational commands, and system maintenance tasks. It also provides tools to search and read live VyOS documentation directly from official sources to assist with command syntax and router features.

  Last updated 2026-07-13

  27

  3

  MIT

• junos-mcp-server

  workfloworchestrator

  A

  license

  A

  quality

  B

  maintenance

  Enables read-only troubleshooting of JUNOS devices by running show commands over NETCONF, with dynamic device discovery from an orchestrator.

  Last updated 2026-06-30

  2

  Apache 2.0

• netlab-mcp

  steinzi

  A

  license

  A

  quality

  B

  maintenance

  Wraps ipspace/netlab as an engine to give LLMs access to validated, lab-tested network device configurations instead of hallucinated ones.

  Last updated 2026-07-21

  8

  4

  Apache 2.0

• snmp-mcp

  acato

  A

  license

  A

  quality

  B

  maintenance

  An MCP server that wraps the IETF SNMP standard so AI agents can poll any SNMP-speaking device on the network, with generic primitives and MIB-specific wrappers for read-only inspection.

  Last updated 2026-05-28

  9

  Apache 2.0

• Blackveil DNS

  MadaBurns

  A

  license

  A

  quality

  A

  maintenance

  A DNS and email security scanner with 77 MCP tools for assessing SPF, DMARC, DKIM, DNSSEC, SSL/TLS, and more, providing guided remediation and attack path simulation.

  Last updated 2026-07-24

  80

  98

  7

  Business Source 1.1

• zeek-mcp

  lidless-labs

  A

  license

  A

  quality

  B

  maintenance

  An MCP server for Zeek and Suricata, providing intelligent log parsing, querying, and analysis over network security monitoring data.

  Last updated 2026-07-14

  39

  158

  MIT