See sender's timestamp

Sender's Time Zone is a plug-in for Microsoft Outlook that displays the sender's current time when you read or reply to an Outlook e-mail message. You will see local time of the sender, sender's time zone, and time and date of sending a message. This tool will be a real helper if you often converse with people in different countries. There's no need to calculate the current time of the sender in your head anymore.

This handy little plug-in for Outlook will take just a few minutes to install, you won't need to configure anything. You simply open an e-mail message and besides the standard Outlook timestamp, you will see the sender's current time, and the time and date when the message was sent.

Please find more information here.

No problem. It is true, that if a message goes through Exchange Server, you will see the server time instead of the sender's time. In such cases, you can quickly set the right time zone for a particular person and from now on the add-in will show the correct information.