Snackbar

A snackbar is a thin bar that slides up from the bottom of the screen with a short message — "Email archived" or "5 items deleted" — and often a single action button: Undo, Retry. It auto-dismisses after a few seconds.

A snackbar is similar to a toastToastcomponentsA brief message that slides in and disappears on its own., but a snackbar can carry one action and lingers a little longer. Use it after destructive actions so users can undo a mistake. Show only one snackbar at a time; new ones replace old.