"Creating an Automation System Using n8n" matching MCP connectors:

Give an agent its own inbox: send, receive, and pull signup codes from real email.

Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links. 34 tools; bearer auth with an mfx_ API key (free tier).

Give an AI agent its own inbox — receive email as a webhook, send over a verified domain.

Sequenzy MCP server for AI-powered email marketing automation.

InboxPolicy is an MCP email-verification server for agents. Get an actionable verdict: send, send_with_caution, review, retry_later, or avoid, with confidence and SMTP evidence, plus tools for detailed verification, asynchronous batches, and usage tracking

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

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/

Empower AI agents with SendPulse email, CRM, chatbot, SMTP, and course automation

First-party MCP server for Fastmail, including email, contacts, and calendars. See: https://www.fastmail.com/blog/an-mcp-server-for-fastmail/

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

AI email automation, follow-ups, training, previews, and mailbox troubleshooting.

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