Open Envelope with Letter for Mailing

An illustration depicting an open white envelope, revealing a letter with lines of text visible within. The envelope's edges are adorned with classic red and blue striped borders, commonly recognized with airmail or international correspondence. The top flap of the envelope is unfolded, suggesting it's either prepared for sending or has just been opened to reveal its contents.

envelope - letter - mail - open - correspondence - airmail - mailing - post