# Microsoft Purview

- [Create a retention policy for Exchange Online](/system-admin-book/email-and-office-365/microsoft-purview/create-a-retention-policy-for-exchange-online.md)
- [Create a Retention Policy for Archiving in M365](/system-admin-book/email-and-office-365/microsoft-purview/create-a-retention-policy-for-archiving-in-m365.md)
- [How to Apply Retention Tags to Non-Default Folders in Office 365](/system-admin-book/email-and-office-365/microsoft-purview/how-to-apply-retention-tags-to-non-default-folders-in-office-365.md)
- [Create a sensitive info type for Credit Cards using a function](/system-admin-book/email-and-office-365/microsoft-purview/create-a-sensitive-info-type-for-credit-cards-using-a-function.md)
- [Create a Top-Secret sensitivity label for email only](/system-admin-book/email-and-office-365/microsoft-purview/create-a-top-secret-sensitivity-label-for-email-only.md)
- [Create a 3 year retention label for when data is last modified](/system-admin-book/email-and-office-365/microsoft-purview/create-a-3-year-retention-label-for-when-data-is-last-modified.md)