Communication MCP Servers

Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.

Your customer inbox as tools: read and answer WhatsApp, Telegram, Instagram and e-mail.

Email signature management finally simple and measurable. Built for teams & AI agents.

Email validation from the public Disify API. No key required.

Validate email addresses by format, MX record, and disposable domain. No key required.

Build, edit, and deploy Telegram bots on FlowCastle's hosted visual flow platform.

Send email, check deliverability, set up domains, and run templates, contacts and campaigns.

theHarvester Cloud - Email & Subdomain Finder

Email OSINT Tool - Find Registered Accounts on 120+ Sites

Email for agents: domains, aliases, IMAP mailboxes, DNS, sending and webhooks via one API key.

Outside-in DNS, email security, SEO, GEO and app-link checks plus developer utilities.

Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.

Receipt tracker with no friction: receipts arrive by email and file themselves

ChatGenius tools: Instagram, Facebook, WhatsApp and SMS inbox, contacts, bookings, flows, posts.

Assess a domain, IP or ASN: mail and DNS security, certificates, routing and a report card.

Email API tools for software agents: inbox creation, message and thread reads, search and sending.

MCP server for Siglio. Lets an AI assistant send documents for e-signature by email or text.

Contact Verify (verify-x402). Basic $0.002, domain $0.02, sender $0.025.

Verified B2B contacts at named accounts, email verdicts, contract signals and drafted campaigns.

A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall.