Checkmark

A double checkmark indicates that the message has been read by the recipient.

Source: tatoeba (12362584)

Put a checkmark in the box corresponding to the correct answer.

Source: wiktionary

But when records of bad decisions find their way into the spotlight, it is seemingly impossible to keep the pitchfork-wielding blue checkmarks at bay.

Source: wiktionary

While economists generally say that a W remains entirely possible, they aren’t willing to make it their most-likely forecast because it hinges on two total unknowns: whether there is another spike in infections, and whether states will shut down again if that happens. Analysts who venture a guess increasingly favor a nonletter shape as their base-case: the checkmark.

Source: wiktionary