First of all open web browser, then go to the official page of Rackspace email account.
Enter the button of login which is present on the top of the homepage.
After which , you will redirect to the dashboard of ‘Apps.Rackspace Email Login, where you will the options of different services. From the options of different services, choose Rackspace Webmail Login’ option.
Enter Rackspace email account email address in the given text field.
Enter Rackspace account password in thee given text field.
Enter the button of login.
Read more here:- https://datarecovo.hpage.com/steps-to-log-in-apps-rackspace-com-webmail-account.html