"Testing Library" matching MCP connectors:

HooklistenerBOAuth

com.hooklistener

Webhook, email, WebSocket and tunnel testing for AI agents: capture, wait, verify, replay.

Check if a signup email is disposable, free, an alias, testing, parked or unknown, with evidence.

Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools

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.

Email for AI agents, with guardrails. The Notix MCP server lets an agent send and manage email through the Notix API using scoped keys: sandbox keys for safe testing, live keys that require approval before big sends and enforce daily caps. Also covers OTP/verification codes by email and SMS.

Inbox Placement Test

online.live-direct-marketing.check

Programmatic email deliverability testing for AI agents. Create inbox placement tests across Gmail, Outlook, Yahoo, Mail.ru, Yandex — get per-provider placement (Inbox/Spam/Promotions), SPF/DKIM/DMARC auth, Rspamd & SpamAssassin verdicts, DNS health, and live SSE results.

MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/

Inbox placement tests across Gmail, Outlook, Yahoo and 30+ providers.

Disposable test mailboxes on a real domain: send, receive and assert on real email.

Outbound from your AI. Find people who match your ideal customer, run paced LinkedIn, email and X sequences from your own accounts, and approve drafted replies. Nothing is sent without your approval. Includes a free library of the most-liked cold messages on X. OAuth sign-in; docs at https://pumpgtm.com/docs/mcp