When you reply to a plaintext email in Outlook (2013, though same issue with 2010), it always prefixes the original message with something like the following:
> -----Original Message-----
> From: Doe, John
> Sent: Friday, July 31, 2015 1:23 PM
> To: Soap, Joe
> Subject: RE: My awesome email
The rest of the message follows, prefixed with > characters (as I have configured). I see some other clients include a different prefix, like this:
2015-07-31 13:23, John Doe:
Or
On 7/31/15 1:23 PM, John Doe wrote:
To me, these are far more readable (and significantly less space consuming). Is this something that people can configure?