You are able to toggle on and off receiving promotional Dapper emails and SMS (text) notifications. This can be done from your Account Settings within your Dapper Wallet and by navigating to the Notification Preferences or the Notification Methods section under the account info section.
For SMS (text) notifications, you will need to add a phone number to your account when you toggle this feature on. After adding a phone number, you will need to verify your phone number by receiving an SMS verification code to your phone. Once you verify your phone number, you will receive SMS notifications going forward.
Please keep in mind that disabling promotional emails will not disable receipts related to purchases, withdrawals, or sales on the Marketplace.