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  2. CORE
  3. Uploading email addresses and starting files

How to upload and validate a file of email addresses.

Understand how to simply validate your email list.

Log in to your Hippo World account.

From Hippo World home page click GO on the CORE product block.

upload and validate a file of email addresses

If you haven’t activated CORE, you will need to click the ‘ACTIVATE PRODUCT’ button in the top right-hand corner.

Only account administrators can activate products.

How to activate your CORE product-1

Once activated, the CORE Quick Start page will be displayed.

core upload file

You are now ready to upload a file which must be in a CSV or TXT format.

Alternatively, you can copy and paste up to 10,000 email addresses into the Paste email addresses box – for this method see this article.

Files can be dragged and dropped into the upload file box or you can click inside the Upload file box to bring up the File Explorer – then simply double click or click ‘Open’ on the file to upload. 

core base file 1


You will be taken to the Manage Files page. Click the ‘VERIFY’ button to begin the verification process. 

core manage files

To complete the process, you will be asked how you would like to pay – by using your existing subscription quota (Use subscription quote) or making a one-off payment (Pay for these now).

Verify files

If you chose your quota, click ‘VERIFY USING QUOTA’ and your file will begin processing.

If you choose to pay click ‘PAY NOW’, and you will be taken through the check out process based on whatever payment method you have previously selected.

Once the checkout has been completed, your file will begin verification.

You will be emailed once the verification process has finished.

To learn how to download your results please read the following article – Downloading your CORE results.