# MailerCheck MCP

Vendor: MailerCheck  
Category: other  
Auth: API_KEY  
Composio slug: `mailercheck`

MailerCheck verifies individual email addresses and email lists, reports verification results, and tracks account credit balances.

## Tools

- **Create Verification List** — Create a MailerCheck verification list by ingesting a name and email-address array. Creating a one-address list did not reduce the account credit balance during live probing. This action does not invoke the separate, credit-consuming Start 
- **Delete Verification List** — Permanently and irreversibly delete a MailerCheck verification list by ID. Use only when the caller explicitly intends to remove the list.
- **Get Credit Balance** — Return the current MailerCheck verification-credit balance. Use this before VERIFY_EMAIL or START_LIST_VERIFICATION when cost matters.
- **Get Current Account** — Return the connected MailerCheck user and account identity. Use this to confirm which user and account the API token represents.
- **Get Verification List** — Return one verification list, including its status, item count, verification timing, and aggregate result statistics.
- **List Verification Lists** — Return one page of verification lists for the connected MailerCheck account, with an opaque cursor when another provider-controlled page exists.
- **List Verification Results** — Return one page of email-level results for a verification list, optionally filtered by classification. The success envelope and pagination behavior are based on MailerCheck documentation and were not live-verified because producing results 
- **Start List Verification** — Irreversibly start verification of every address in a MailerCheck list. A successful call spends one verification credit per address. Before calling, use GET_VERIFICATION_LIST to inspect the list count and GET_CREDIT_BALANCE to confirm the 
- **Verify Email** — Consumes exactly one MailerCheck verification credit on every successful call. Synchronously verify one email address and return its classification; check GET_CREDIT_BALANCE first if cost matters.

## Setup

1. Create or open a Switchy Project.
2. Open Integrations and connect MailerCheck.
3. Authorise through api_key.
4. Teammates can now @-mention MailerCheck tools in chat.

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Last verified: 2026-09-03T02:00:04.194Z  
Canonical URL: https://switchy.build/directory/mcps/mailercheck