iOS: auto-correction on email input fields

In the app I am developing there is an email login and I have added auto-correction to the email input text field.

My thinking is that I have a text shortcut set up for @@ to be replaced by my email address. The auto correction does this. Also, iOS (I think) will eventually learn your email address and offer it for correction when necessary.

However, it has been suggested to remove this auto correction.

I was wondering if there is some best practice here that I can reference on whether I should enable/disable the auto-correction of the email input field?