MillionVerifier

Bulk Email Checker has verified more than 12 billion addresses since 2012 for over 400,000 customers. Real-time SMTP verification delivers 99.7% accuracy by handshaking directly with mail servers rather than querying cached databases. Upload a CSV or TXT file to clean an existing list, or call the REST API to validate addresses at signup and checkout. Every result includes disposable detection, role account flags, catch-all handling, spam trap identification, domain typo correction, and MX server intelligence returning IP, hostname, location, ISP, and ASN. Pricing is pay-as-you-go from $2.95 per 1,000 verifications down to $0.000132 per address at 25 million. No monthly fees, no contracts, and credits never expire. Duplicates and unknown results consume nothing. High-volume users can switch to the Unlimited API for flat thread-based pricing from $250 per month with no per-email cost.

Blaze Verify & TheChecker have merged to become Emailable. The most cost-effective email checker to reach your audience. Sending emails is not enough. You need to have them delivered. Improve your deliverability and email marketing campaign ROI with the most reliable and affordable email checker. Clean old lists, keep them healthy, and filter out the bad emails. With our various solutions, we’ve got you covered. Use our bulk email verifier to improve deliverability and campaign performance in no time. Reduce bounces by removing bad emails from your lists. Improve your email deliverability by up to 99%. Add email validation features to your own app using our APIs. Put your list cleaning on autopilot and let Monitor do the work for you. Your lists will be automatically synced and reverified every single day. Keep only deliverable addresses on your list. Select which emails are removed from your list with our custom configurations. Improve deliverability and secure inbox placement.