How can I change my IQOS account email?

In order to change your account email address, you need first to login and visit your account page.

For updating your email, you can visit the “Profile login information” section and click on the “edit e-mail address” icon. Select whether you want to receive your verification code to your registered phone number or e-mail address.
After checking the code, enter your new e-mail address and save the changes
In order to verify your email, check your inbox and click on the email verification button.