If your email address does not match your company domain, your account can still be connected to your company.
After you've created your account, and requested to join your existing company profile, your request will be automatically sent to the Owner or Admin of the profile for manual review and approval.
Your account status will be "pending" until it is approved. As soon as you are approved, you will be notified via email. For additional details, refer to Pending Approval to Join Company.