Superb Idea Rated 5 out of 5 stars
I'm using this addon to specify what time it's in my recipient's place and whether he's asleep or not?(so I can guess why he's not replied yet)
I've other ideas which can be implemented in this or a new addon:
- Showing time of a received email in sender's local time
- Showing a tooltip when hover over a contact in which you can see his local time (good for sending reply)
- Doing all of these automatically!