Meaning
A heavy tick mark on its own, without a box, usually in a dark, neutral colour. It means correct, approved, confirmed or done.
People use it to confirm details, approve plans and mark finished tasks in a clean, neutral way: “Order received ✔️ shipping tomorrow” Shops often line it up in front of product features. It differs from ✅, which sits in a green box and feels more celebratory, while ✔️ looks calmer and more formal.