Solution
What you'll see your Alteryx Auto Insights mission summary email depends on your mission design.
If you'd like to make any changes to the mission summary email, you can simply make those changes in 'Edit' mission.
Here's how you can edit your mission from the mission summary page:
However, if you don't have permission to edit the mission or you'd like to keep the original design of the mission, you can make a copy of the relevant mission and make edits there. This way, you can have a mission with relevant pages for email while keeping a copy of your original mission for reference or search purposes.
Here's how you can duplicate a mission from the 'Missions' tab:
You can read more about editing your mission in this Help article.
Don't forget to subscribe yourself and relevant users to the mission to be sent as a summary email!