Forgot to mention that 1 notification can be sent to many users. 

Not sure whether I should be using Total or Unique

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Hi Anita,

Thank you for reaching out to Amplitude Support. Happy to help!

Based on your use case, you seem to be on the right track. However, whether to use 'Total' or 'Unique' depends on the specific question you're trying to answer.

If you're interested in the total number of times an email was clicked, regardless of who clicked it, then 'Total' would be the appropriate measure. This counts every event instance, even if the same notification is sent multiple times to the same users or if the same user is clicking the email multiple times.

On the other hand, if you're interested in the number of unique users who clicked the email, then 'Unique' would be the appropriate measure. This counts a user only once, no matter how many times they clicked the email. However, in your case, as the hold property constant option is enabled, the same user may appear multiple times with a different notification ID. (e.g., Sent/Click - User A x notification ID=1, User A x notification ID=2)

In the context of calculating clickthrough rate, you might want to consider using 'Unique' to get a sense of how many individual users are engaging with your emails. However, 'Total' could also provide valuable insights, such as if certain users are clicking your emails multiple times.

I hope this helps! Please let me know if you have any questions.

Best regards,
Manabu


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