Chat time stamp?

Hey NT1,

In-game at the moment there is no option for a timestamp.
However that is a nice idea and I shall be passing it onto the Dev team for you.

There is, however a log file which records everything and it does have a copy of your chat messages with timestamps.
This can be found in: x:\Program Files\Grinding Gear Games\Path of Exile\logs\
The log file itself is called 'Client.txt'.