"How to Use a Web Browser" matching MCP connectors:

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

Gives an AI agent its own email address: create mailboxes, send and reply, read the inbox, and block until a reply arrives. Includes a draft lifecycle so a human can approve outbound mail before it sends.

Find and enrich leads, run multi-channel outreach, and manage the sales pipeline.

7 sales-outreach persona and skill products plus deliverability tooling over MCP: audit_copy scores email copy out of 100 for spam triggers and personalization, sequence_planner builds opt-out-respecting cadences, subject_line_scorer ranks up to 20 lines, utm_builder produces tracking URLs, and get_free_skill loads any product's complete free gateway skill.

Send transactional email, run campaigns, manage contacts and automations, audit deliverability.

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

Verify email addresses and clean lists to improve deliverability and sender reputation.

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

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)

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

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

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

Klaviyo MCP Pack — wraps the Klaviyo API for email marketing

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

Gmail MCP Pack

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

Render HTML/.eml emails in real Gmail, Outlook & Yahoo web clients and screenshot them

Postmark MCP.