Evaluate the following scenarios involving SaaS platforms to determine if they correctly demonstrate effective activation metrics:
- Scenario I: A CRM software platform measures activation by the number of users who integrate their email accounts within the first week.
- Scenario II: A project management tool defines activation based on how frequently users update project statuses and utilize collaboration features.
- Scenario III: An email marketing tool considers a user activated when they have sent their first email campaign.
- Scenario IV: A graphic design software tracks activation by the rate of users who upgrade from a free trial to a paid subscription.
Identify which scenarios correctly reflect effective activation metrics.