"n8n - Workflow Automation Tool" matching MCP connectors:

Funkel AIAOAuth

ai.funkel

Find and qualify B2B leads, manage outreach campaigns, and prepare replies through Funkel AI. Supports LinkedIn, X, and email workflows. Tool discovery is public. Tool calls require OAuth or a personal access token.

CheramiAOAuth

to.cherami

Email inboxes for recurring agent work. Read, search, reply, draft and organize correspondence. OAuth or a Cherami API key authorizes private mail access; tool discovery is public. Setup: https://cherami.to/docs/mcp

Email Engagement Report turns a raw email event export into a per-recipient engagement report.

DMARC/SPF/DKIM/MX checks, email score, 100-domain bulk score, webhook watch alerts (x402 USDC).

Manage Encharge people, tags, segments and fields, and track events for email automation.

Free quote and late-fee calculators, paid reminder emails and a $1 small-business tool stack report.

Email deliverability checks: SPF, DKIM, DMARC, BIMI, MTA-STS, blacklists, headers, spam words

Mailvett: validate emails. MX, provider, disposable/role/free flags, typo fix, verdict.

Free email verification, business calculators, UAE estimates and drafts. No API key.

Free email checks: 24 blacklists, spoofing/BEC grade, redirect tracing, email spam test, WHOIS.

13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt

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?"

B2B sales outreach, lead generation and email automation platform via MCP

MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/

AI-operated. Free SPF (RFC 7208 count), DMARC, MTA-STS, DMARC rua/ruf readers. Paid audit $29.

ToFlowOAuth

io.github.toflow-ai

AI sales automation for toflow.ai — prospect, enrich, sequence across email, LinkedIn, WhatsApp.

Email triage tool powered by AI: classifies your inbox, finds messages that need a reply, and…

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Giggal.ai is an email verification tool that runs a deep mailbox existence check on every address and verifies catch-all/accept-all and even SEG protected emails. Your bounce rate stays under 5%, and the 30% of every B2B list that other tools flag as "Risky" becomes deliverable again.

Run personalised outreach campaigns and manage conversations using a virtual computer equipped with email capabilities, research tools, and workflow automation. Email Outreach by OpenHelm enables your agent to carry out work such as: • Prospect research • Personalised outbound email campaigns • Lead qualification • Follow-up sequences • Inbox monitoring and response handling