here’s a step-by-step guide on how to change your password in the Apple Mail app on iOS devices:

  1. Open the Settings app on your iOS device.
  2. Scroll down and tap on Mail.
  3. Tap on Accounts.
  4. Under the Accounts section, tap on the email account for which you want to change the password.
  5. Tap on Account, located at the top.
  6. Here, you’ll see the current settings for the incoming mail server, including the password. Tap on the Password field and enter your new password.
  7. Once you’ve entered your new password, tap on Done in the top right corner to save your changes.