"How to run C++ code" matching MCP connectors:

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

Agent-run cold-email infra: 24 MCP tools, live sending, free sandbox. $99/mo, concierge go-live.

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

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

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

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)

Klaviyo MCP Pack — wraps the Klaviyo API for email marketing

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

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

Gmail MCP Pack

Postmark MCP.

Internet identity for AI agents: register or broker domains, email, DNS - pay by card or USDC.

Email infrastructure for AI agents — send, receive, search, and reply to email over MCP.

Outlook Mail (Microsoft 365) MCP Pack

AI agent email — 23 tools free to read inbox, 28 paid to send. $9.99/mo. Token auto-provisioned.

AI-powered virtual assistant that connects to Gmail, Outlook, Slack, Salesforce, HubSpot, Google Calendar, DocuSign, QuickBooks, and 20+ other services. Manage your entire professional life through a single Claude conversation — email, calendar, CRM, documents, travel, expenses, and more.

Connect any email mailbox (Gmail, Outlook, IMAP/SMTP, OVH, LWS, Infomaniak...) to Claude, ChatGPT & any MCP client. Read, send, reply, schedule and search emails. No code, OAuth2, EU-hosted (GDPR). 15 email tools.

Shipmail MCP server for AI agent custom-domain email inboxes with REST API and webhooks.