EmailOnPush messages could be more compact and easier to read
### Problem to solve
EmailOnPush messages could be more compact and easier to read
### Further details
(Include use cases, benefits, and/or goals)
### Proposal
The header contains much space, the font size is very large. This could be more compact. (e.g. so that one doesn't need to scroll down to see the diff).
### What does success look like, and how can we measure that?
(If no way to measure success, link to an issue that will implement a way to measure this)
### Links / references
issue