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Emaillistverify

Email list verification service for bulk list checking, blacklist scans, contact-email finding, and disposable-domain detection.

Helps outbound teams that upload email lists for cleansing, look up business emails by name and domain, and scan IPs against DNSBLs.

Example Use Cases

These are the Emaillistverify actions Snow can use when building apps with you. Connecting an account does not make Snow run these on its own.

Check Blacklists

Tool to check an IP address (IPv4/IPv6) or domain against multiple DNS-based blacklists (DNSBLs) for spam or malicious activity. Use when you need to verify the reputation of an IP or domain. Rate limit: 10 requests/second.

Check Disposable Domain

Tool to verify if an email domain is associated with temporary/disposable email addresses. Includes DNS record verification. Use when you need to validate if a domain is disposable before accepting email registrations.

Find Contact Email

Tool to search for a contact's business email address by name and company domain. Returns possible emails with confidence levels (high/medium/low/unknown). Rate limit: 5 requests/second. Credits: 5 (with name) or 10 (domain only).

Get Credits

Tool to retrieve details about available on-demand and subscription credits. Use when you need to check credit balance before performing verifications. On-demand credits never expire, subscription credits are refreshed daily. Rate limit: 10 requests/second.

Upload Email List

Tool to upload an email list file for bulk verification. Accepts .csv, .txt, or .xlsx files (max 100MB, 1M rows). Returns an ID to query verification progress. Rate limit: 5 requests/second.

Verify Single Email

Tool to verify email deliverability status of a single email address. Returns a plain text status representing deliverability. Rate limit: 10 requests/second. Credits required: 1.

Verify Single Email Detailed

Tool to verify email deliverability with detailed metadata including MX server info, ESP, first/last name estimation, gender, and role detection. Use when you need comprehensive email validation beyond basic deliverability. Rate limit: 10 requests/second, requires 1 credit per verification.

Delete Maillist

Tool to delete a finished email list. Use when you need to remove a completed verification list. Only lists that have completed verification can be deleted.

Download Email List

Tool to download a finished email list with verification results. Supports customizable columns (firstName, lastName, gender, result, etc.) and file format (csv/xlsx). Rate limit: 5 requests/second.

Get API File Info

Tool to retrieve progress of an uploaded email list verification. Returns status (errored/waiting/progress/finished) with download URLs when complete.