Redirect an Email in Outlook 2010 or Later
When you want an email to look like it came from the original sender and not from you, redirect the email. Using the Resend option makes the email appear the same as the original message without the added information in a forwarded message. The email will be resent to the contacts you specify, and those contacts can reply to the original sender.
Redirect an Email in Outlook 2007
The Resend feature is available in Outlook 2007, as well. Using the Resend option makes the email appear the same as the original message without the added information in a forwarded message.
When Resending Messages Fails
If you run into problems redirecting messages by resending them, forward emails as attachments as an alternative. Another way to redirect is to use an add-on such as the Email Redirect component for Outlook.
Redirect an Email in Outlook Online
There is no Resend feature in Outlook.com. However, you can clean up an email message before forwarding it to remove the header and other information.