Lineicon › Communication Mailbox Flag icon Mailbox Flag line icon from the communication set. Free download as SVG or PNG, 48px grid, 1.5px stroke, for personal and commercial use. Tags: mailbox, post, box, mail, letter, city2.Download mailbox flag.svg Tags: mailbox, post, box, mail, letter, city2 Related communication iconsMailboxMailbox With LetterLove LetterMegaphoneLove LetterMegaphoneLoudly Crying FaceMegaphone