ValidHQ.com
Free Email Address DNS Validation
To get started, simply upload a CSV file.
We'll identify email addresses and return a CSV of validated rows.
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Where should we send results?
Processing usually takes 5-10 minutes, we will email you the results when complete.
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How does it work?
We examine the DNS records for each email address given to determine that (1) The domain name exists and (2) The domain has valid MX records