Why do some statistics in Engage (e.g., Openers, Clickers) show slightly different numbers than the Campaign Dashboard?
The reason is that statistics in Engage and the Campaign Dashboard are currently counted differently in some edge cases. Here's a more detailed explanation:
To collect data, Mapp sends events from within an e-mail - for example, when an e-mail is opened. It may happen that these events are blocked by an e-mail client. Also, Mapp can track if a link was clicked. This information is collected when the user opens the website.
Therefore, it may happen that the "open" event is blocked (by the e-mail client), but a click on link is tracked (on the website). In order to avoid counting a Click for which no Open was tracked, in these cases Engage adds an artificial "open" event. This artificial event also counts for the Engage statistics.
However, artificial events currently do not count for the Campaign Dashboard statistics. Thus, the numbers in the Campaign Dashboard may be slightly lower than in Engage.
In the future, artificial events will also count for the Campaign Dashboard statistics.