--- title: O365 Whitelisting description: Learn how to whitelist emails in O365 to prevent important messages from being marked as spam. Follow our simple guide to ensure trusted senders always reach your inbox. --- [![Jericho Security logo](https://support.jerichosecurity.com/hubfs/assets/images/Jericho-Security.svg)](https://www.jerichosecurity.com/) [![Jericho Security logo](https://support.jerichosecurity.com/hubfs/assets/images/Jericho-Security.svg)](https://www.jerichosecurity.com/) - Why Jericho Why choose Jericho Security? See what sets Jericho Security apart from the rest. 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[← back to all support articles](https://support.jerichosecurity.com/) # O365 Whitelisting ### To allow entries in the Tenant Allow List 1. Send the simulated phishing email. This will cause O365 to initially block the message. 2. Navigate to the Emails tab on the Submissions page at [https://security.microsoft.com/reportsubmission?viewid=email](https://security.microsoft.com/reportsubmission?viewid=email) 3. When you submit a blocked message as Should not have been blocked (False positive), an allow entry for the sender is added to the Domains & email addresses tab on the Tenant Allow/Block Lists page > *Troubleshooting tips:* > > 1. Ensure you have the right access to be able to manage the Allow/Block List (e.g., Organization Management, Security Administrator, Security Operator, Global Administrator) > 2. # Please leave 5 minutes for the entries to be active. > 3. Additional methods can be found on the Microsoft website [here](https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/create-safe-sender-lists-in-office-365?view=o365-worldwide). ##### Categories - [Support (14)](https://support.jerichosecurity.com/tag/support) - [Whitelisting (6)](https://support.jerichosecurity.com/tag/whitelisting) - [Azure (2)](https://support.jerichosecurity.com/tag/azure) - [O365 (2)](https://support.jerichosecurity.com/tag/o365) - [Okta (2)](https://support.jerichosecurity.com/tag/okta) - [SSO (2)](https://support.jerichosecurity.com/tag/sso) - [Barracuda (1)](https://support.jerichosecurity.com/tag/barracuda) - [Google (1)](https://support.jerichosecurity.com/tag/google) - [Mimecast (1)](https://support.jerichosecurity.com/tag/mimecast) - [Phishing (1)](https://support.jerichosecurity.com/tag/phishing) - [Proofpoint (1)](https://support.jerichosecurity.com/tag/proofpoint) - [Triage Center (1)](https://support.jerichosecurity.com/tag/triage-center) #### Subscribe to our newsletter Get the latest updates on phishing trends and generative AI. 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