If you need to figure out how many users haven't completed their account activation, you can pull this data from the Training Leaderboard export which lists all users and their status:
- Enabled: Users who received the invitation email and have activated their account
- Invited: Users who received the invitation email but haven't activated their account yet
Go to Metrics in the top menu, then choose Training
Scroll down to Developer Leaderboard
Click the Export Leaderboard button
You'll receive a confirmation message that the CSV file is being generated and will be emailed when it's ready.
From the export file, you just have to sort by status to see which of your users are pending activation.