"Email" matching MCP tools:

• email

  parseAPI

  Validate an email address: syntax, domain, MX, disposable and role flags. Deep runs a live mailbox verification.

  Connector

• email

  x402 Checker (AI Nock)

  Paid $0.01 USDC exact on Base: email syntax + MX via DoH (no SMTP). Disposable domains and MX-absent = invalid. Fail closed on lookup errors. payTo 0x3903F05a17676566958B0a3E0c21E0bd49B66ea0.

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• email-verifier

  Company Intel

  Checks email addresses: syntax, domain, and whether the domain publishes mail exchangers. Where mailbox-level existence cannot be established, the field is null rather than a guess. — $0.02/call, x402 (USDC on base).

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• email-verifier

  Company Intelligence Tools — Zinin M2M Hub

  Checks email addresses: syntax, domain, and whether the domain publishes mail exchangers. Where mailbox-level existence cannot be established, the field is null rather than a guess. — $0.02/call, x402 (USDC on base).

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• verify-email

  mcp-server

  [Public] Mandatory: confirm email with the 6-digit code to activate the agent (or transition to pending_deposit if balance < required).

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• email-auth

  toolvend - DNS, WHOIS & domain tools

  Email authentication posture for a domain: DMARC + SPF records fetched, parsed, scored 0-100, with findings and fix recommendations. Paid per call: $0.01 in USDC via x402.

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• email-verify

  x402 Bazaar

  Is this address worth sending to? — Syntax + live DNS (MX/A) + disposable, role and consumer-mailbox detection, as one GO / HOLD / STOP verdict with the reasons listed. Catches throwaway inboxes, support@-style shared mailboxes and one-character domain typos (gmial.com). No SMTP probe, so mailbox existence is not claimed. Required input: email. Priced $0.02 per call over x402 on Base; send a prepaid x-credit-token header for unlimited calls, or get 1 free call/day per tool. No wallet or API key required.

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• email-validate

  Toolcall

  Email verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection (121k+ known domains), role-account and free-provider flags. JSON verdict with a bounce/deliverability risk level. Validate emails for signup fraud prevention, list hygiene and lead qualification. [Paid: $0.004 USDC per call via x402 on Base; the calling client pays automatically.]

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• domain-to-verified-work-email

  Lead Intelligence

  Find the work email a named person publishes on their own company website, confirmed by a same-document schema.org Person assertion. No pattern guessing, no SMTP probing. $0.01 only when a published match is found; no-match, role mailbox, ambiguous and partial outcomes are free. — $0.02/call, x402 (USDC on base).

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• job-posting-to-hiring-manager-email

  Lead Intelligence

  Turn a Greenhouse or Lever vacancy into the named hiring owner behind it, with a provider-verified work address from your own BYOK enrichment key. You pay $0.02 only for a verified hiring contact; ambiguous company matches, unsupported boards and empty results are free. — $0.02/call, x402 (USDC on base).

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• resend_confirmation

  1stay

  Resend a hotel reservation confirmation email. Use either the confirmation number from a successful lookup_booking call, or the guest's full name and email address when they do not know their confirmation number, card last four, or check-in date. The email contains the hotel confirmation number the guest can then use with lookup_booking or cancel_booking. Recovery requests never reveal whether a reservation matched. The confirmation is sent only to the email address already on the booking record; there is no recipient override. Email changes are handled at https://stayker.com/service.

  Connector

• reply

  agent-cold-email

  Send a reply on an existing thread, from the mailbox that sent it. Inputs: threadId, body. Returns { messageId, deduplicated }. A reply is real sending volume and is governed exactly like campaign sends: it counts against that mailbox's daily cap (sentToday +1, visible in infrastructure_status), and it is REFUSED — never silently dropped — when the recipient is suppressed, the mailbox is deliverability-paused, or the cap is used up. A refusal returns { error, code:'send_blocked', reason:'suppressed'|'mailbox_paused'|'daily_cap_reached', retryable }: retryable (cap) clears at the next daily rollover, non-retryable does not, so stop retrying and don't loop replies to manufacture volume. Idempotent: identical retries collapse to one send — pass a stable idempotencyKey (else a body hash is used) so a dropped-response retry can't double-send. `deduplicated: true` means NO new email was sent — `messageId` is from an earlier send this call matched. `deduplicated: false` means this platform sent the call onward as a NEW send, which is normally a new email — but it is not a guarantee one left the building: with NO idempotencyKey the body hash is only matched here for 10 minutes, while the sending provider keeps its own record of an identical body on the same thread for longer, and can collapse a much later repeat into the original send. So on a long-delayed identical repeat you may get `deduplicated: false` with the ORIGINAL send's messageId and no new email. PASS AN IDEMPOTENCYKEY, or vary the body, if you need a repeat to genuinely go out. 404 if no sending mailbox is on record for the thread.

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• suppress_lead

  agent-cold-email

  Permanently suppress an email address tenant-wide (every current and future campaign) — the manual/free-text 'stop emailing me' path for opt-outs the strict typed-unsubscribe matcher misses. Inputs: email, reason (fixed 'manual' — the only value this tool honestly claims; bounce/complaint/unsubscribe are recorded automatically elsewhere), note (accepted, not persisted). Cancels every pending send + marks every campaign-lead row 'suppressed'. Last-write-wins: re-suppressing a bounce/complaint/unsubscribe row relabels its reason to 'manual'. There is no un-suppress tool.

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• invite_member

  Hermoso

  Invite someone to this brand workspace by email (role: member = read-only on billing, admin = full). This SENDS a real email invite / share link — an account change. Confirm the exact email + role with the user, then call with confirm:true.

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• discovery_signup_verify

  Disco

  Complete Disco signup using an email verification code. Call this after discovery_signup returns {"status": "verification_required"}. The user receives a 6-digit code by email — pass it here along with the same email address used in discovery_signup. Returns an API key on success. Args: email: Email address used in the discovery_signup call. code: 6-digit verification code from the email.

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• update_account

  BorealHost

  Update account profile fields (email, language, name). Requires: API key with write scope. Only provided (non-empty) fields are updated. Args: email: New email address language: Language preference — "fr" (French) or "en" (English) first_name: First name last_name: Last name Returns: {"success": true, "account": {"email": "...", "language": "fr", "first_name": "...", "last_name": "..."}} Errors: VALIDATION_ERROR: Invalid email format or language code

  Connector

• sendEmailDemo

  email

  SIMULATION ONLY: nothing is delivered. NEVER call this when the user actually wants an email to arrive, and never describe its result as a sent email: no message is sent, queued, or stored, and the recipient receives nothing. To really send with no account, call createEmailAddress (instant, no signup form and no verification) and then sendEmail with the api_key it returns; that is the correct path for any genuine send request. This tool exists only to preview the response shape: it validates the body against the exact same schema as sendEmail (including cc/bcc, reply_to, tags, attachments, and scheduled_at) and returns a synthetic success envelope marked demo: true. Demo requests are capped at 16KB total body, so large attachments are rejected even though the schema allows them.

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• list_leads

  agent-cold-email

  List/export leads with their contact-level disposition, cursor-paginated. Returns { leads[], nextCursor }; each row: leadId, email, firstName, company, campaignId, campaignName, globalStatus, interestStatus, notes, tags, suppressed, lastEventType, lastEventTs, createdAt. Filters: campaign, interestStatus, suppressed, replied. This IS the export surface — paginate to dump the full book of business as JSON (no separate CSV endpoint). Use update_lead to write disposition, suppress_lead to opt an address out.

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• email_verify

  mu

  Check that somebody can read an email address — the verification a signup form runs. Call it with an address to have a six-digit code emailed there, then again with the code the person typed back: the answer says approved or why not, so a wrong code is an answer rather than an error. Pass app to put your product's name in the message rather than this instance's. Costs one send and counts against the daily email allowance. Pass mine when the address is your own and you want mail from it recognised here

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• sendgrid_search_contacts_by_email

  sendgrid

  Look up marketing contacts by exact email address (a read-only lookup — mutates nothing). Returns { result: { "<email>": { contact: {...} } } }. SendGrid: POST /v3/marketing/contacts/search/emails.

  Connector