Hello,
If you are talking about Outlook Emails,I want to suggest you go to setting section of Send/Recive and set it defalt.You can also remove duplicate emails from your Outlook email with the help of Kernel for Outlook Duplicates,It is a proficient tool to remove matching emails, contacts and attachments from an Outlook PST file. It removes all similar records of an Outlook mailbox and reduces the PST file size in the local disk.
