FIG. 1 is a left perspective view of a mail collection device showing our new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a top view thereof, the undisclosed bottom view is not part of the claimed design;
FIG. 5 is a front view thereof; and,
FIG. 6 is a rear view thereof.