Hi Daniel!
The weekly email shows the trend of your Mood KPI, as this is where there might be sudden changes in how people feel at work.
When it comes to participation, trend changes tend to take longer to show, meaning that most users would look at these levels on a less frequent basis, using the dashboard.
The 2 exceptions here being
1. The participation on a day when something good/bad happens
2. When you are preparing activities or events targeted to increase participation and you want to check the impact
There is currently no plan to amend the weekly email to show the participation rate. If more users approach us with the same need we would give it more priority but, to be honest, it's not something that tends to come up.
We gathered our best Participation Tips here!
Hope this helps Daniel?