MailerCheck MCP by usefulapi

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

• Connection: Runs in the cloud
• Transport: Streamable HTTP
• Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

You need

• Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

https://mailercheck.usefulapi.io/mcp

claude mcp add --transport http mailercheck https://mailercheck.usefulapi.io/mcp

{
  "mcpServers": {
    "mailercheck": {
      "url": "https://mailercheck.usefulapi.io/mcp"
    }
  }
}

{
  "servers": {
    "mailercheck": {
      "type": "http",
      "url": "https://mailercheck.usefulapi.io/mcp"
    }
  }
}

https://mailercheck.usefulapi.io/mcp

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

• mailercheck_account

  Read the connected MailerCheck account name, ID and credit balance. Does not verify emails or spend verification credits.

• mailercheck_credits

  Read the available MailerCheck verification credit balance without starting verification.

• mailercheck_lists

  Read one bounded page of list summaries, processing status and statistics. Does not create, verify or delete lists. Pagination stays on the MailerCheck API; no response links are followed.

• mailercheck_get_list

  Read one existing list's verification status and aggregate result counts. Does not start or restart verification.

• mailercheck_verify_email

  Submit one email for asynchronous verification. Spends MailerCheck credits and requires confirm:true. This call is never retried. Read the returned verification ID with mailercheck_verification_result; wait between polls. If the response is lost, check MailerCheck before submitti

• mailercheck_verification_result

  Read the status and result of a previously submitted asynchronous email check. Does not start new verification. Call once and wait before polling again; no automatic polling is performed.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

• ✓ Pass

  Maker matches the repo

  The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)

• … Not checked yet

  Still maintained

  We have not read this repo from GitHub yet

• … Not checked yet

  Has a licence

  We have not read this repo from GitHub yet

• ✓ Pass

  Endpoint responds

  Responded in 59 ms (HTTP 200)

• – Not applicable

  Sign-in with OAuth

  No sign-in needed

• ✓ Pass

  No hidden instructions in tool descriptions

  Read 6 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

• More stars than 0% of the other 1762 servers in this category
• Published to the registry more recently than 97% of the other 1762 servers in this category
• Basic checks equal to or better than 100% of the other 1762 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

README from the maker

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