Do you want to remove your Stamps account? You can do that when following the next steps:

1. Open the Stamps-App
2. Are you not logged in yet? Log in
3. Open the settings, in the right upper corner of the screen
4. At 'My profile', there is the option to 'Delete account'
5. Enter your password
6. You will get the control question if you are sure to delete your account, confirm  
7. You are now logged out of the app and your account is successfully deleted