Do you have a list of up to 500,000 email addresses to check?

You're in the right place.

Cleaning your email lists has never been easier. All you need to do is upload your file.

  • CORE counts the unique email addresses in your data - there's no charge for duplicates.
  • See the price, then pay as-you-go or use subscription quota.
  • Whilst your emails are checked, you can head off to do something else, we'll email you when your file is ready.
  • Every list will take at least 10 minutes with additional time based on the number of email addresses.
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Email Hippo Guaranteed performance levels

CORE is fast, accurate and reliable - and it's backed by guarantee

Imagine how great it will feel to be trust your email address lists.

Trust CORE to help you:

  • Connect with real people, who have given you real email addresses
  • Weed out bad emails and identify disposable email addresses
  • Build your business on rock solid, accurate data