On: Setting the clock ahead to see what breaks

[foxhill]

indeed, but i don’t think they are able to retroactively update the time stamp of an already sent email :)

[iso1631 → foxhill]

Why would it?

"It allows the recipient to know whether the email was written in the morning or the evening."

I guess sure, you could write it in the morning then send it in the evening. Most people write and send at the same time, and thus most headers have the stamp of the time it was written.