How to Create User Level Filter?
1. Log into your cPanel account.
2. In the "Mail" section, click on "User-Level Filtering" Icon.
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3. Under "Filters by Users", You can see all of your existing email accounts, Click on "Manage Filters" next to the appropriate one.
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4. Click on the "Create a New Filter" button
5. Enter a name for the filter in the Filter Name text box.
6. In the rules of the filter you can filter e-mail by many options, and should you want to deal with e-mail which contains a word like "Lottery" or other words, then select "Contains" under the "Rules" list, select "Body" from the dropdown list and from the 2nd drop down list.
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7. Under "Actions" list select "Discard Message"
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8. Now Click on the "Create" Button.