If you no longer have access to that email address, then you can't receive a password reset email. For some strategies that can help you recover a password for an email address that you no longer have access to, see Troubleshooting general IAM issues.
Important: If your AWS account and Amazon.com retail account share the same login information, then updating the root user credentials (including the password) for one account updates both accounts.
To reset an IAM password
If you sign in as an IAM user, then your account administrator manages your credentials. If you can't change your own IAM password, then contact your account administrator.