How do I change SMTP password?

Hi lucille243,

You can change your SMTP server settings in Settings > Mail > [account_name] > Account > SMTP.

In many cases it's simpler to just remove and add the account if your outgoing mail isn't working:

If you can’t send email on your iPhone or iPad

Let us know if that has your Mail working the way you expect.

Thanks for using the Apple Support Communities.