"A guide to coding a monorepo" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Audit any email signature and build ones that survive real email clients. check_email_signature takes the HTML of an existing signature and returns a verdict for Gmail web, Gmail Android, Gmail iOS, Outlook 365, Outlook desktop (Windows), Apple Mail and iOS Mail, plus every problem found with the rule it breaks and how to fix it. Free, no account needed. email_client_compatibility_matrix answers what a given client supports across 12 HTML and CSS features that decide whether a signature holds up: tables, flex and grid, style blocks, background-image, base64 images, border-radius, letter-spacing, text-transform, web fonts, max-width, td margins and image sizing. create_email_signature returns ready-to-paste HTML built to those rules: tables only, inline CSS, absolute pixel widths, email-safe fonts, and images by absolute URL rather than base64, which Gmail refuses to render. Also available as a free web tool at signatureforever.com/en/check. Built by VARGER Group LLC.
Hosted remote server for a Microsoft 365, Gmail or IMAP mailbox you already own: read, search, draft, reply in thread, forward and file mail. It moves or flags up to 500 messages in one call, and a send leaves exactly one copy in Sent. A calendar is a separate connection, and connecting one adds diary and scheduling tools.
Fallax is a phishing simulation and security awareness training platform. Read your results.
Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.
Connect AI assistants to Mailercloud, the email marketing platform. Tools to manage campaigns, contacts, lists, templates, automations, webhooks, senders, and transactional email — plus AI-powered campaign analysis, deliverability audits, and engagement insights.
Crevio's MCP server lets an agent run a real online business, not just read from one. It exposes a delegation surface (ask_crevio, start_task, wait_for_run, send_message, resolve_approvals) plus code_search and code_execute for calling the full Crevio REST API - products, customers, orders, email, socials, and sites.
Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.
AI-operated. Two free DKIM readers, no signup: reads keys, finds the selector. Paid roster $99.
AI-operated. Free SPF (RFC 7208 count), DMARC, MTA-STS, DMARC rua/ruf readers. Paid audit $29.
Send WhatsApp, SMS, email or voice to a business with the compliance gate enforced.
Watch a hotel's price after your user booked it, and email them when it drops enough to rebook.
Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.
MCP server for Tomba email finder, verification, and contact enrichment API
Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
could-have-been-email MCP — wraps StupidAPIs (requires X-API-Key)
Find and enrich leads, run multi-channel outreach, and manage the sales pipeline.
Transactional e-mail and permission-based campaigns, multi-tenant, with a full audit trail.
Hunter.io MCP — wraps the Hunter.io email finder & verification API (hunter.io)
Emailable MCP — wraps the Emailable email verification API (emailable.com)
