How do you stop Bank of America from sending promotional emails?

The email messages from Bank of America state the following to opt-out from receiving the constant spammy emails.

"Opt-out instructions This is a promotional email from Bank of America. To select the types of promotional email messages you prefer, or to opt-out of future promotional emails, please update your Email Preferences. "

When you visit the site it is near impossible to find where you can choose to manually edit or cancel these types of promotional emails.

The link below is the link from Bank of America to opt-out from receiving email promotions.