Last updated: 2018-11-21

Source: https://support.freshdesk.com/support/solutions/articles/235312-can-i-see-an-email-after-its-deleted-from-trash-

A ticket will remain in the trash folder inside Freshdesk for 30 days and post which it will be permanently deleted automatically from the database. Once a ticket is deleted from the trash folder manually or automatically there is no option to restore the ticket.