Remove Duplicate Email for Outlook - Version 3.20.8 Remove Duplicate Email is a powerful and easy-to-use Microsoft Outlook Add-In for searching and processing of duplicated email messages and posts in Microsoft Outlook folders and mailboxes.You can use this add-in for Outlook to find email message and post copies both in a single folder and in different folders. A duplicate message found can be: Marked with flag, Deleted, Copied and Moved to any folder you choose.High-speed searching and processing (delete, mark, copy, move).Over one Million email messages and posts supported.Compare attachments and attached files of all email copies.Multiple formats of an email message or post are compatibled, including HTML, RTF, plain TEXT and more.There are two different work modes in Remove Duplicate Email: