Backend Statistics / Notifications for Mods

[joatu]

It would be incredibly useful to be able to get logs/notifications around if/when a user logs in for the first time, reminders if they haven't ever logged in, reminders if they've never created initial posts, how many messages have been sent, etc.

Auto-sending messages to users related to certain things like offers/request posting would also be great.

Also, a one-click email to re-invite them? (Although I imagine this will be less important once our system is more automatized in general)

We should discuss these ideas in more detail later on, they aren't crucial now and will change pretty quickly as more features are implemented.