Inspired by Mafia_Penguin's logo here.

Several logos for mail folders, all tranparent, made with different effects.

M - GMail
A - AOL
I - The old hotmail logo
L - Yahoo Mail

#1 - Reflection
#2 - Reflection, 60% Opacity
#3 - Reflection, Inner Bevel
#4 - Reflection, Inner Bevel, 60% Opacity
#5 - Drop Shadow