During activation you would have told the rep your e-mail address to get registered for e-billing. However, the actual bill is not sent there. Instead, you should have received a registration link for Koodo's Self Serve in your inbox. If not, I would call them and them resend it so you can register.
It's a nice tool for checking your bill history (up to 18 months), checking airtime/data usage, changing your plan, resetting voicemail password, swapping SIMs, etc.