Email & messaging

DNS and list based verification. Never claims that a mailbox exists without evidence: without an SMTP probe the verdict for a routable address is "unknown", not "valid".

ShieldAPI - x402 security preflight before agents trust an identity, sender, or email counterparty

Check whether an email address is well-formed and its domain can receive mail, before you send. Five DNS checks on an email address, no message sent: syntax, MX presence and hosts, SPF record, DMARC policy, disposable domain, role address. Returns deliverable as NO, RISKY or LIKELY. It does not open an SMTP session and says so: mailbox existence is explicitly not c…

Compute an HMAC signature (hex) of an input string with a secret key. Supports sha256, sha512 and other algorithms — for webhook signing and message authentication.

Validate whether an input string is well-formed JSON. Returns a valid flag and a parser error message when invalid.

Email verification: is one address deliverable, disposable or a role account? Check ONE email address before you send to it: pass [email protected] and get a verdict (deliverable-domain, role-account, disposable, bad-shape or no-mail-domain) from its shape, its MX records read live over DNS, 25 known disposable-mail domains and 27 role-account names like info, support and admin. The mailbox itself is not probed, and the answer says so. Paid in USDC on Base.

Bulk email verification: up to 100 addresses in one call. Clean an email list: pass [email protected],[email protected] (up to 100 in one call) and get a verdict per address plus totals. Each address is checked for usable shape, for MX records read live over DNS, against 25 known disposable-mail domains and against 27 role-account names like info, support and admin. Verdicts are deliverable-domain, role-account, disposable, undeliverable, unknown or invalid, and each one says in words what it means.

Check up to 100 email addresses in one paid call, billed per address.

Check whether an email address is well-formed and its domain can actually receive mail — RFC-style syntax check plus a live MX (falling back to A) lookup — returning the parsed domain, sorted mail hosts, and a deliverable flag. Answers "is this email address real" and "will mail sent here bounce" without probing the mailbox itself. Use for lead cleaning, signup validation, and contact verification. Nothing stored.

HMAC of a message under a key — Genesis402 / UnyKorn Operator Network

Takes a message history and a character budget and returns a shortened history together with a full account of what it cost. Four stages run in fixed order: pin protects messages that must survive (roles listed in keep_roles, the last keep_last_n messages, and anything you marked pin), dedupe removes later near-duplicates of an earlier message of the same role using word-overlap similarity, trim shortens unprotected survivors to max_message_chars at the last sentence boundary, and drop removes…

EIP-191 digest of a message (what personal_sign actually signs) — Genesis402 / UnyKorn Operator Network

Verify a single email address for deliverability. Returns a search ID to poll for results via the Fetch Search Result endpoint.

Surface customer & prospect context from Slack, email, transcripts and tickets in any MCP client.

Human-in-the-loop for AI coding agents — ask questions, get approvals via Slack.

A MCP server for Gmail that lets you search, read, and draft emails and replies.

A MCP server for Outlook email that lets you search, read, and draft emails and replies.

Control plane for agent auth walls. Connector 0 handles SMS OTP with US test numbers.

Give AI agents real phone numbers, messages, and voice calls via MCP.

Remplir un constat amiable et recevoir le PDF signé par email, directement en conversation.

Ask questions across your WhatsApp inbox from Claude, ChatGPT, Cursor or any MCP client.

Send and read WhatsApp messages on your Leporis account from AI coding agents, via your own API key.

Receipt tracker with no friction: receipts arrive by email and file themselves

Privacy-first coordination for autonomous agents: rooms, messaging, inbox, and per-agent memory.

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

Identity resolution MCP server for phone/email lookups across 31+ services. Global + India coverage.

Operate one Evolution API (WhatsApp) instance: chats, history, sending, groups, settings.

IOC feed from Telegram CTI channels. Filters: type(ip|domain|url|hash|cve), severity, min_confidence, since, tlp, tag, channel, limit, offset. Returns items[] with iocs[], ttps[], confidence, severity, tlp, tags[].

Check an email address: RFC syntax, live MX records via DNS-over-HTTPS, and disposable-domain screening. POST { email } or { emails: [...] } (max 20).

Fetch a public Telegram channel's posts (with optional in-channel search and history pagination) or a single post with its discussion comments