"Exploring "Node" - A Versatile Term with Various Interpretations" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Email security and AI discoverability scores for any domain, with the exact record or tag to fix.
Hosted remote server for a Microsoft 365, Gmail or IMAP mailbox you already own: read, search, draft, reply in thread, forward and file mail. It moves or flags up to 500 messages in one call, and a send leaves exactly one copy in Sent. A calendar is a separate connection, and connecting one adds diary and scheduling tools.
AgentiSend is a transactional email API: send through verified domains with a message log, budgets, a preflight and refusals that name the fix; built so AI agents can send on your behalf. The hosted MCP server at https://api.agentisend.com/mcp exposes 82 tools (44 on tools/list; the rest via list_more_tools). A send is one message or a batch of up to 500 items with per-item results. preflight_email runs every gate a real send runs, sends nothing, and costs nothing. Every 4xx returns code, message, and fix. There is no tool for unsolicited mail. Auth is a bearer API key or OAuth 2.1 with dynamic client registration. Starter prompts: "Send this receipt to the customer." "Preflight this send and tell me what would stop it." "What can I spend today?"
Manage a Mailcheer email workspace: subscribers, segments, campaigns, transactional sends and stats.
Give your AI agents dedicated inboxes on your own {userDomain}.epst.cc domain. Read, search, draft, send, and reply to emails through MCP with a single API key.
Your agent needs a mailbox of its own — to receive, thread, draft and send, with attachments, without borrowing your personal inbox or your company's SMTP. **What you can ask for** • "Create an inbox for this agent and tell me its address." • "Read the new messages in this thread and draft a reply." • "Send this message with the attachment and wait for the response." • "Search this inbox for everything from that domain." • "Show delivery metrics and the events on this inbox." **How to use it** Point any MCP client at https://mcp.aisa.one/mail/mcp and sign in with OAuth — there is no key to create or paste. 49 tools: create and delete inboxes, list and read messages, raw message bodies, attachments, threads, drafts and draft attachments, send and reply, message search, inbox events, metrics, and list entries — reads and writes. **Why this rather than the source** A real inbox an agent owns, rather than an SMTP credential it borrows from a human. **It is also a door to the rest** The same login reaches 26 sources and 580+ operations. Find the contact elsewhere in the catalogue, then write to them from here — without adding a second server. **What it costs** Finding and inspecting an operation is free. Running one is billed per call at API prices, with no seat and no monthly minimum, and every call takes max_price_usd so an agent cannot overspend by accident. **Where else it reaches** https://mcp.aisa.one/sales/mcp finds the person to write to.
Crevio's MCP server lets an agent run a real online business, not just read from one. It exposes a delegation surface (ask_crevio, start_task, wait_for_run, send_message, resolve_approvals) plus code_search and code_execute for calling the full Crevio REST API - products, customers, orders, email, socials, and sites.
Fallax is a phishing simulation and security awareness training platform. Read your results.
Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.
Verify email addresses in real time and find business email addresses with live mailbox checks.
DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.
Reach a human at Voix: submit the studio contact form and get a reply by email.
Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.
Send email, push, Slack, Discord, Telegram and webhook notifications and manage templates with Ray.
Register, renew, transfer, and manage domains, DNS, VPS, and email with 105 tools. By OSIR.
Give AI agents structural conversion intelligence for SaaS lifecycle messaging. Scores any email against a proprietary 7-point Decision Friction Model and returns a diagnosis with recommended fixes.
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
Send WhatsApp, SMS, email or voice to a business with the compliance gate enforced.
Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.
Watch a hotel's price after your user booked it, and email them when it drops enough to rebook.
