You'll definitely get an email for those steps wherever IRCC requires you to take action :
- Test invite
- Fingerprints letter (if IRCC requires it)
- Interview invite (if IRCC requires it)
- Citizenship ceremony/oath invite
So you don't actually need to setup the tracker to get your citizenship. It's really only needed if you want to check whether any of the other intermediate steps prior to oath invitation are 'done/completed' or not (i.e. Background check & LPP).
You can create a tracker account yourself now if you choose (
https://tracker-suivi.apps.cic.gc.ca/en/register), OR
just be extra careful to monitor all emails (including junk/spam mailbox) to not miss any request and you should be fine.