Notifications or Reports that summarize content changes over the past day, days, week etc.

Why this is needed: I use the feature board view a lot to discuss our new-feature plans with engineering. As and when we make decisions, features can move sideways (e.g., from a Parking lot to a named release) or up and down (e.g., in a single Parking Lot list). This would be in addition to other feature content changes we make, e.g., add a new requirements, tweak an existing one, etc. Right now, the notifications engineering receives are for very granular changes, i.e., each and every change for a feature is an email. Which forces them to parse emails to figure out the "net change" that has occurred since a certain time in the past. This quickly becomes very tedious and cumbersome when there is a lot of planning and feature content change activity. 

Ideas to address the need:

• (1) Support once-a-day summary notification emails that summarizes all the changes that occurred over the previous day. The goal of this email is to summarize changes and not necessarily show the actual changes. So the content in such an email could take the form of a list/table of features that has one record per feature with a possible link to the feature's history view for more details.
• (2) Allow the history you track for features/releases etc. to be available for use in reports.