It opens like a normal app — full screen, one tap, no browser bar. On iPhone it's also what lets you turn on push alerts. Everything still comes by email either way.
Safari moved the Share button in iOS 26 — it now lives behind the ••• button at the right-hand end of the address bar, along the bottom of your screen.
Your screen may look slightly different depending on your phone and its software version — Safari has moved these buttons around between iOS releases, and Chrome renames this menu item every so often. If a label doesn’t match exactly, go for the closest wording; the order of the steps is the same.