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What is a whitelist in Office 365?

The term whitelist means telling your email provider that you trust the person sending you the email. It means you approve of the sender’s message being delivered to your Inbox at any time. When email addresses are whitelisted, it prevents emails from landing in the Spam or Junk folders and instead shoots them to the top of your priority Inbox.

How do I whitelist an email in Office 365?

1. Whitelisting emails using the Mail Flow rule

Whitelisting emails using the Mail Flow rule ensures maximum security. With the Mail Flow rule, all the security check-ins e.g. SDF and DMARC are carried out.

2. Use Office 365 Defender

After making these changes, Emails from the sender are now excluded from the Spam Filter and should automatically be delivered to your main Inbox.

How do I add an email to the Safe Senders list Office 365 admin center?

There is a slight difference between whitelisting an email address and adding an email to the Safe Senders list. In Office 365, messages from email addresses in the Safe Senders list are never considered junk mail. Proceed with this method to add an email address to the Safe Senders list: Once done, the selected email address should be added to the Safe Sender’s list. At this point, you will receive the mail, no matter the content of the message. Sometimes, even after adding an email address to the safe sender list, the email content of the message might be blocked. You can resolve this by reading our guide. Whitelisting an email address in Office 365 is one of the surest ways to ensure the delivery of priority messages to your Inbox and not filtered as Spam. You can whitelist emails using any of the two techniques we’ve highlighted. However, it’d be better to use the mail flow rule to ensure maximum security.

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