How do I keep trash from emptying

Users cannot change any of the email delete timings. But you could create your own archive folder for mail you want to hang on to and move messages to that. Trash and Spam are the only folders that Xfinity deletes messages from, the contents of all other folders are kept indefinitely.

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Good morning @2happyhills you can find information on Xfinity Email Deletion Settings here:  https://www.xfinity.com/support/articles/set-email-deletion-settings