Ideas...

• [ ] Emails moved to Done per day – could have graph overlaid with total emails per day
• [ ] Days that Inbox Zero was reached on – calendar like a habits app
• [ ] Time spent on email per day

How to record?

• [ ] Store the data for each day in a Stripe metadata labelled stats-29-10-2018 etc. WON'T WORK — Stripe lets you store 20 metadata fields max — probably need db
• [ ] How to record emails received per day when KanbanMail isn't open? 🤔