Email List Validation
Verify email addresses to check if they're valid, risky, or disposable before sending.
Connects to Email List Validation to verify single emails or bulk lists. Checks deliverability, detects catch-all addresses, disposable emails, and spam traps. Helps marketers and businesses avoid bounces and maintain sender reputation.
Try asking Muse: "Check if the emails on my signup list are real before I send my newsletter."
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Source: Found in the official MCP Registry (com.emaillistvalidation/email-verification) · First listed October 29, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 54 min ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://app.emaillistvalidation.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Email List Validation is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://app.emaillistvalidation.com/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Screening · October 29, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 9
get_api_keyGet a free API key for this server (no account needed; 25 email verifications per day). Returns the key once — reconnect with 'Authorization: Bearer <api_key>' to use the other tools.get_credit_balanceGet the current credit balance and a short usage summary for the account.list_listsList the user's bulk verification lists/jobs, most recent first.get_listGet the details of a single bulk verification list by its id.explain_resultExplain what a verification status or reason means in plain English, with a send recommendation. Covers valid, invalid, catch-all/accept-all, unknown, greylisted, disposable, role, free, spam-trap, abuse, do-not-mail, no-mx, disabled, and network. Use when a user asks what a resuverify_emailVerify the deliverability of a single email address. Returns a verdict (valid, invalid, risky, unknown). Costs 1 credit.verify_batchVerify a batch of email addresses (up to 2000). Returns verdict counts and saves a list. Costs 1 credit per email.estimate_costEstimate the credit cost of a verification before running it, and whether the user can afford it. Provide either a count of emails, a list_id to re-verify, or an operation ('single'/'finder'). Always quote this before proposing anything billable.get_batch_statusGet the progress and status of a bulk verification list/job by id.Recent checks
Link
https://app.emaillistvalidation.com/mcpQuestions about Email List Validation in Muse
How do I connect Email List Validation to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Email List Validation to help me. It is a free service with an MCP server at https://app.emaillistvalidation.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Email List Validation working right now?
At the last check (October 29, 2026, 11:00 UTC) the endpoint was down. Over the last 7 days it answered 0% of health checks. It is checked every 15 minutes.
Is Email List Validation safe to connect to Muse?
It was screened on October 29, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Email List Validation do in Muse?
It exposes 9 tools, including get_api_key, get_credit_balance, list_lists, get_list. For example, you could ask Muse: "Check if the emails on my signup list are real before I send my newsletter."
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Is this yours?
This listing was added from public sources (Found in the official MCP Registry (com.emaillistvalidation/email-verification)). If you build Email List Validation, claim it to correct the details and get your badge.
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<a href="https://musedirectory.ai/connector/email-list-validation"><img src="https://musedirectory.ai/badge/email-list-validation.svg" alt="Email List Validation on musedirectory.ai" width="236" height="40"></a>