Autofill Verification Codes from Apple Mail
Apple is bringing back the ability to automatically detect verification codes received in Apple Mail and fill them in on websites you visit in Safari.
This was initially available when Apple first unveiled the verification code autofill feature in the early iOS 12 betas, but for whatever reason, by the time iOS 12 was released, the e-mail portion of the feature had been cut, leaving only SMS verification codes. Apple never said why, but the best guess is simply that it couldn’t read e-mail messages reliably enough. The advent of more sophisticated machine learning algorithms has likely improved that.