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That's the Single Item Recovery window, i.e. the retention period for messages removed from the Deleted Items container. The maximum you can set it to is 30 days as detailed here: <a href="https://technet.microsoft.com/en-us/library/ee633460(v=exchg.160).aspx" rel="ugc">https://technet.microsoft.com/en-us/library/ee633460(v=exchg.160).aspx</a><br />
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You can use the examples in the article to configure it for all mailboxes. If you need more that that, look into the in-place hold functionality.<br />
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There is no retention window for messages moved to the Deleted Items container in Office 365, they will stay there indefinitely, unless the user removes them.
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That's the Single Item Recovery window, i.e. the retention period for messages removed from the Deleted Items container. The maximum you can set it to is 30 days as detailed here: https://technet.microsoft.com/en-us/library/ee633460(v=exchg.160).aspx [https://technet.microsoft.com/en-us/library/ee633460(v=exchg.160).aspx]

You can use the examples in the article to configure it for all mailboxes. If you need more that that, look into the in-place hold functionality.

There is no retention window for messages moved to the Deleted Items container in Office 365, they will stay there indefinitely, unless the user removes them.

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I have office 365 exchange<br />
the default email retention for deleted emails is 14 days, I want to change this to 45 days for all current mailboxes and all future.<br />
How do I do this?<br />
thanks
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I have office 365 exchange
the default email retention for deleted emails is 14 days, I want to change this to 45 days for all current mailboxes and all future.
How do I do this?
thanks

Change email retention to 45 days for all mailboxes in Office 365

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.