We deployed a few improvements to e-mail/IM flight alerts today.
The flight alerting system now respects your time zone preferences, so if you selected a certain time zone or prefer local time, the time will be adjusted accordingly. Previously, all alerts were in UTC/Zulu.
For non-mobile alerts, the airport name is included in the message now. Additionally, mobile alerts are now significantly shorter for the convenience of people receiving alerts as cell phone SMS text messages.
Stay tuned for more features and functionality coming soon.
If you don't already use flight alerts, simply click "alert me" on any flight page (at the top of the tracking box) or visit http://flightaware.com/live/alerts/
to manage your alerts.