MCP Servers 201

Double CheckNew

io.github.mgleonard-ops/double-check

C✓Verified

AI-powered scam detection for suspicious texts, emails, and screenshots.

Disposable email inboxes for AI agents.

AgentPingNew

io.github.Noriget/agentping

B✓Verified

Let your AI agent notify you by email, Slack, Discord, or webhook.

Agent ToolsNew

io.github.WingedGuardian/agent-tools

B✓Verified

9 utility tools for agents: DNS, WHOIS, email, IP, URL, headers, QR, text, tech.

Domain & company intel for AI agents: RDAP, DNS, email deliverability, tech stack.

Email A/B tests for AI agents: subject lines, managed sends, open/click tracking, and results.

Dead-man's-switch heartbeat monitor for agents, cron jobs & workers.

Search 136M+ US/CA B2B contacts free, verify emails free, get compliance verdicts.

Create and manage waitlists from your AI agent: page, custom domain, emails, signups, broadcasts.

Search across M365 content including documents, emails, sites, files, and chats.

Render HTML/.eml emails in real Gmail, Outlook & Yahoo web clients and screenshot them

Backend for AI-built apps: database, auth, files, email, AI, payments, deploy, realtime.

Snov.io: lead discovery, email verification, enrichment, CRM, and LinkedIn automation actions.

Finds, filters, and verifies local-business leads; every email carries a verification receipt.

Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.

MCPDomainNew

io.github.danboabes/mcpdomain

B✓Verified

Buy & manage domains from any AI chat: availability, register, DNS, email forwarding, AI bot stats.

Agent-native marketing email: draft, edit, screenshot, and send from your verified domain.

Professional DNS diagnostics: 14 tools for DNS, DNSSEC, email security, SSL, and propagation.

Corporate identity finder and email verification.

SendersNew

io.github.dame-senders/senders-mcp

B✓Verified

Cold email infrastructure — campaigns, prospects, mailbox health and replies via Claude.

InthreadNew

io.github.james-robson/inthread

B✓Verified

Sign in with email or GitHub.

Autonomous B2B lead prospecting — 36 tools for campaigns, leads, and email outreach.

PostariNew

io.github.wilmendezofficial/postari

B✓Verified

Email marketing y transaccional AI-native: campañas, correos 1-a-1, contactos, flujos y métricas.

OmnierNew

io.github.jessesorsa/omnier

B✓Verified

Turn signals from email, CRM, and meetings into a prioritized daily sales to-do list.