A mailbox with letters inside and a bird standing atop.

Mailbox With Letters And Standing Bird

A cardinal direction of an arrow pointing to a capital letter N, representing the North.

North Sign With Arrow

A vertical window tab with x and - on top right corner of window.

Lines representing text on a piece of paper in the style of a letter or assignment.

An empty rectangular horizontal computer window with a menu bar with an X shape and a minus symbol.

A speec bubble with three Z letters, indicating sleep.

A "set preferences" icon of two circles connected by a line: one with an X shape and one with a tick.

An opened envelope with a letter coming from it.  

Circles and X shapes indicating confusion or dizziness.

A piece of medical equipment for an MRI or X-ray machine.

An open envelope with a pointing cursor and a letter with a notification icon on its top corner.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.