Email verification MCP: check addresses before your agent sends

    For sales, marketing and support teams whose AI agent sends to or stores email addresses. Our verification tools check whether an address can receive mail, flag catch-all, disposable and role addresses, and clean whole lists before a campaign. ZeroBounce, Hunter, MillionVerifier, BounceBan and more, through one connection, with no API keys.

    33 tools and 4 skills that use them. Pay per use from one balance, no API keys.

    Connect your AI AgentSee the tools

    Starting prices. Prices can vary with length and quality. Your AI Agent works out the exact price, runs the tool from your balance and tells you what it cost. Failed uses are free.

    What do you want your agent to do?

    Our email verification tools and MCPs

    SourceBest forExample, today's priceOfficial MCP
    ZeroBounceDeliverability and risk status with catch-all detectionVerify an email address — catch-all and risk status, $0.018 per resultYes
    HunterSMTP, catch-all and disposable checksVerify email — catch-all, disposable and SMTP checks, $0.016 per callYes
    MillionVerifierReal-time checks with catch-all, disposable and role flagsVerify email — catch-all, disposable and role flags, $0.0024 per call
    BounceBanCatch-all and protected mailboxesVerify email — catch-all, disposable and role flags, $0.0052 per call
    OrbiSearchDeliverability, catch-all status and mailbox risk signalsVerify an email address, $0.0017 per call
    EnrowDeliverability checks that include catch-all domainsVerify an email address, $0.0029 per call
    Routed verificationOne of many verifiers, picked for each checkVerify an email address, Free to $0.0013 per call

    Also in the list: LimaData, Dropleads, Icypeas, Tomba, LeadMagic, Anymail finder, Dropcontact, Trykitt and others, plus domain checks for mail servers and disposable domains.

    How to choose the best email verification tool or MCP for you

    Deliverable, risky or unknown

    Every verifier sorts addresses into deliverable, invalid and a gray zone. Ask your agent to keep the reason for each result, so you can drop the invalid ones and decide on the risky ones yourself.

    Catch-all domains

    Some company domains accept mail for any address, so a standard check can't tell. If many of your leads sit on such domains, use a verifier that checks catch-all addresses further.

    One address or a list

    Single checks suit sign-ups and one-off leads. For a list, use a bulk job or a batch of single checks, and have your agent return a cleaned file with a status per row.

    Format checks are not mailbox checks

    Some tools only check the format, the domain and its mail servers. That catches typos and dead domains, but only a mailbox check tells you whether the address exists.

    If you needChooseToday's price
    Check one address nowZeroBounce$0.018 per result
    Many addresses, one by oneMillionVerifier$0.0024 per call
    Leads on catch-all domainsBounceBan$0.0052 per call
    A list of thousandsIcypeas bulk job$0.0247 per result
    Throwaway domains at sign-upTomba domain checkFree
    A verifier picked for youRouted verificationFree to $0.0013 per call

    Quick picks: ZeroBounce for single checks, BounceBan for catch-all domains, a bulk job for long lists and the domain check for throwaway addresses.

    Why use Agensi instead of separate email verification MCPs?

    ZeroBounce and Hunter run official MCP servers, and each needs its own account and credits. Verifiers also disagree on risky and catch-all addresses, so a second opinion helps. With Agensi your agent can check an address with one verifier, ask another about the unclear ones and pay per check from one balance, with no API keys. It runs without asking while your balance covers it. Set limits or have it ask first in Dashboard → Balance.

    What you getOfficial MCP per brandOwn API key or community serverAgensi
    AccountsOne per brandOne per brandOne
    API keysPer brand, or a sign-inPer brand, kept by youNone
    PaymentA plan or credits per brandPer brandOne balance, per use
    Spending controlVariesUp to youLimits per use, day and month, or ask first
    Several sources in one answerConnect several serversSeveral servers and keysOne connection
    Skills for the whole jobNoNoYes, from the marketplace

    When another way is the better choice. If you clean very large lists every month, a verification service's own bulk upload and plan may suit you better, and ZeroBounce's MCP server can use the credits you already bought. To check addresses on a sign-up form, call a verification API from your own code: an agent isn't part of that flow.

    Set up in your AI agent

    Connect your AI agent to Agensi once, sign in and click Allow. After that it can use every tool: it runs one from your balance and tells you what it cost. No API keys or provider accounts.

    1. Open Settings, then Connectors, then Browse connectors and add Agensi (or Add custom connector and paste https://mcp.agensi.io/mcp/auth).
    2. Sign in to Agensi and click Allow. One agent per account: connecting a new one disconnects the old one.
    3. Ask for what you want, for example: "Use Agensi to verify the 200 emails in this file, check the risky and catch-all ones again with a second verifier and give me a clean list." Top up from $5 if your balance is low; failed uses are free.

    Grok, VS Code, GitHub Copilot, Cline, Kiro and other agents with remote MCP and sign-in work too: see the setup guide.

    What it costs: a worked example

    "Use Agensi to verify the 200 emails in this file, check the risky and catch-all ones again with a second verifier and give me a clean list."
    About$0.584

    At today's starting prices. Your agent works out the exact price for your request and tells you what it cost.

    Combine email verification tools with skills

    Email verification MCP: frequently asked questions

    A verifier checks the address format, looks up the domain's mail servers and then asks the receiving server whether the mailbox exists, without sending a message. It returns a status such as deliverable, invalid or unknown, often with flags for catch-all, disposable and role addresses.

    An address on a domain that accepts mail for any name. A standard check can't confirm a single mailbox there, so it returns unknown or accept-all. Some verifiers, such as BounceBan, check these further. Send to unresolved catch-all addresses with care, because some of them will bounce.

    An online email checker usually tests one address at a time by hand. A verification API lets software, such as your AI agent, check addresses inside a workflow or across a list. Through Agensi your agent uses verification APIs without its own account or key and pays per check from your balance.

    No. Verifiers talk to the receiving mail server and stop before any message is sent, so the person never sees it. Results are a good guide, not a guarantee: mail servers change, and some hide whether a mailbox exists.

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    Samuel Rose

    Founder & CEO of Agensi

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