bullhorn-email-checker

Gmail Username Availability — Bulk Email Registration Checker

maged120/gmail-availability

Check whether Gmail usernames are available for new account registration. Verify a list of usernames in bulk without creating any accounts.

Email Checker/Verifier

mikolabs/email-checker-verifier

Verify the existence of any email address in real-time without ever sending a single message. This high-performance Apify Actor uses a specialized Rust engine to perform deep SMTP handshakes, MX record validation, and provider-specific checks (Gmail, Yahoo, Outlook) with extreme speed and accuracy.

University Email Checker

tomas.nosek/university-email-checker

Check whether an email belongs to a university domain.

Disposable Email Checker

junipr/disposable-email-checker

Check emails against 30,000+ disposable domains (Guerrilla Mail, Mailinator, etc). MX record verification and domain age checking. Batch process thousands. Ideal for signup fraud prevention and list cleaning.

Instant website health check for marketing agencies. Checks SSL, mobile-friendliness, social media links, email, contact forms, Google Analytics, schema markup, page speed, SEO basics. Grades each site A-F with actionable issues list.

DMARC & Email Security Checker

taroyamada/dns-dmarc-security-checker

Validate domain infrastructure in bulk to boost email deliverability. Extract DMARC policies, SPF records, and MX configurations to keep outreach out of spam.

Outlook / Hotmail Username Availability — Bulk Email Checker

maged120/outlook-username-checker

Check if an Outlook/Hotmail/Live email username is available for registration. Verify multiple usernames in bulk.

Pinterest Email Checker API

dev00/pinterest-email-checker-api

Silently check if an email address is registered on Pinterest. Perfect for lead enrichment, OSINT, and fraud prevention.

Disposable Email Checker

phazonoverload/disposable-email-checker

Checks if email addresses belong to disposable/temporary email services.

Email Validator — Bulk Email Verification & Checker

scrapepilot/email-validator----bulk-email-verification-checker

Validate any email list in bulk — syntax check, MX record lookup, and SMTP reachability test. Get quality score (high/medium/low), result classification, and free provider detection per address. Checkpoint resume on abort. $7.99/month. 2-hour free trial.

HubSpot Email Checker · Bulk Login Detection

corent1robert/hubspot-email-registration-checker

Bulk-check whether email addresses have a HubSpot login. Paste a list, get one structured row per email: registered, HTTP status, and raw HubSpot response. No manual lookup needed.