When do you need to whitelist an email manually?
When your email server automatically blocks an email from a verified sender.
How to whitelist an email?
Login to your cPanel, go to (Email) – (Spam Filters)
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Then select (Show Additional Configurations) – (Edit Spam Whitelist Settings)

Whitelisting email addresses should be inserted as follows:
- user@company.com — To whitelist a single email address.
- *@company.com — To whitelist all of the addresses at company.com.
- ?[email protected] — To whitelist a single character in an address at company.com (i.e., [email protected], but not [email protected]).
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