"Google Cloud Platform (GCP)" matching MCP connectors:

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.

Capture receipts, scan Gmail, analyze spending, and create reviewed reports from AI assistants.

DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

Manage Subscribers, Broadcasts, Sequences, Automations, and reporting in Mailrith.

Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.

Emailable MCP — wraps the Emailable email verification API (emailable.com)

MCP server for Tomba email finder, verification, and contact enrichment API

Hunter.io MCP — wraps the Hunter.io email finder & verification API (hunter.io)

Findymail MCP — B2B email finder & reverse-email lookup (findymail.com)

could-have-been-email MCP — wraps StupidAPIs (requires X-API-Key)

ActiveCampaign MCP Pack — email marketing + CRM (API v3).

send-that-email MCP — wraps StupidAPIs (requires X-API-Key)

Klaviyo MCP Pack — wraps the Klaviyo API for email marketing

Read your own DMARC aggregate and forensic reports: sources, alignment, alerts, CSV export.

Mailchimp MCP Pack — manage audiences, campaigns, and members via Mailchimp Marketing API.

Gmail MCP Pack

Email compatibility analysis across 15 clients — preview, audit, fix, diff, deliverability.

Postmark MCP.

Verify email deliverability & find business emails (single or bulk) via the Verifox API.