I have connected the mail app from the galaxy s2 to my email (exchange). The notification (which I have set to vibrate) is just a very short vibrate. It seems very likely that I will often miss this notification (unlike the gmail app for example which vibrates for a much longer time). Is it normal for the vibration of the default mail app to be very short? And if so, is there a way to change that?
There are two methods you can use to adjust the vibration duration:
This may not be available for all devices/Android versions
There are a few applications available from Google Play Store that you can use to adjust vibration timers.
Vibration Notifier by j4velin allows you to set a vibrate interval and additionally alows you to specify the duration of each vibration:
Let your device vibrate every X min. when you missed a call / received an eMail