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According to machine translation, your question is:
How to revert the change from POP3 mail to Microsoft Exchange? We made the change from our company mail that each user used as POP3 and therefore had the option to delete emails only for him to one of Microsoft Exchange. Given that the options to delete or mark emails as read only for a user were lost, we would need to revert the change from POP3 to Exchange and go back to having POP3. Could you tell us how to do it?
If you have migrated from POP3 server to Exchange and the goal is to migrate back to POP3 server, it may based on what kind of migration method does the POP3 server support.
If you are using Outlook as client, you can migrate via export & import pst files.
Export emails, contacts, and calendar items to Outlook using a .pst file
Import email, contacts, and calendar from an Outlook .pst file
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