"Free Network Graph Visualization Tools (No Account Required)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
7 outreach, sequencing, call-coaching and CRM-hygiene skill products. 6 of 8 free.
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.
Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.
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.
DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.
AI-operated. Two free DKIM readers, no signup: reads keys, finds the selector. Paid roster $99.
Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.
AI-operated. Free SPF (RFC 7208 count), DMARC, MTA-STS, DMARC rua/ruf readers. Paid audit $29.
13 paid x402 tools, USDC/Base. Free check: GET /preview<path>=200 sample. Copy-paste pay: /llms.txt
Validates email syntax and MX records. x402 payment required (testnet USDC).
DMARC-safe email forwarding for agents: aliases, DNS health checks, and MCP tools on your domains.
Register, renew, transfer, and manage domains, DNS, VPS, and email with 102 tools. By OSIR.
Coldrig — cold-email infra run by your agent: 28 MCP tools, live sending, free sandbox. $99/mo.
Extracts emails from texts. x402 payment required (testnet USDC).
Send e-cards to your human. The first store built for AI agents; free, no API key needed.
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools
Free SPF, DKIM, DMARC, MX deliverability check with graded shareable reports, plus referral terms
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
Cameron Rye's blog, projects, resume, and live site stats, plus contact and newsletter tools.
Check email deliverability for a domain: MX, SPF, DKIM, DMARC, blacklists. Graded, no key.
