Add an email address for your mobility account? I haven't seen that offered in years. If you have Telus Internet (DSL, not fibre) at home, you can contact Telus directly and see if they can add an email account there.
If it's an important venture, consider getting yourself a domain name and an email address associated with it. If not, consider Gmail or Outlook.
If you find a post useful, please give the author a "Like" or mark as an accepted solution if it solves your trouble.