Hi @singleton
To create a new HubSpot Portal (account) with your email address:
1. login into HubSpot (Accounts Dashboard | HubSpot)
2. click on this link: https://app.hubspot.com/signup/crm/step/existing-user
3 . choose “Create account with a new user” and follow the bouncing ball.
Have fun
Mike
p.s. thanks to Shi Jun at HubSpot for help on this one