Double Exclamation Mark

Usually no: it turns up the volume on the surrounding words. After “we got tickets ‼️” it celebrates; after “why did you do that ‼️” it sharpens the challenge. Casual texters use it as visual volume, while readers raised on conventional punctuation can hear a raised voice. Read the sentence, the relationship and the placement together.

Its roots are typographic. Unicode files ‼ among double punctuation for vertical text (writing that runs top to bottom, as in Japanese) and maps it to two ordinary exclamation marks. As one character, the pair can stand upright as a single unit in a vertical line. The emoji look came later, on top of that old punctuation mark.

Someone sent me ‼️ — what do I do?

Answer the words it's attached to, not the mark. Alone after your news, it's a high-energy “no way”: give them the rest of the story. After a request, do the task or ask what's unclear; another reaction isn't a reply. After an accusation, treat it as the accusation said louder.