com.mailtester/email-verification
repo:https://github.com/mailtester-com/mailtester-mcp
Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.
- transport:
- remote
- credential class:
- open
Owner verification
Not yet verified. Verifying proves you control this server and is free, permanently — it never changes a published score.
Start verification →Tools
- estimate_costshallow
Estimate 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.
- explain_resultshallow
Explain 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 result means.
- get_api_keyshallow
Get your own free API key for this server (no account needed; 25 email verifications per day). Optional: the verification tools already work without a key on a shared trial. Returns the key once — reconnect with 'Authorization: Bearer <api_key>' for your own quota and the list tools.
- get_batch_statusshallow
Get the progress and status of a bulk verification list/job by id.
- get_credit_balanceshallow
Get the current credit balance and a short usage summary for the account.
- get_listshallow
Get the details of a single bulk verification list by its id.
- list_listsshallow
List the user's bulk verification lists/jobs, most recent first.
- verify_batchshallow
Verify a batch of email addresses (up to 25 per call with an agent key). Returns per-email verdicts and saves a list. Costs 1 credit per email.
- verify_emailshallow
Verify the deliverability of a single email address. Returns a verdict (valid, invalid, risky, unknown). Costs 1 credit.
Embed this server’s score
Tool count and median score across every tool in this server’s corpus — honest in a way a single cherry-picked tool’s badge wouldn’t be.
[](https://vouch.tools/servers/ca1b2dd1-a062-4011-9806-447dec952152)