I'm aware of the list of stats tools
http://www.postfix.org/addon.html
Looking for experience/recommendations from users here.
grep's served me well enough for just a few servers.
As I switch to all/only Postfix at multiple locations, something easily
automated/deployed is of interest.
DIY is doable; I'd prefer a product/project that's still actively
maintained.
I'm looking for as lightweight as possible.
I'm OK with just scheduled text/emailed reports; usual prefer them to
visual displays, whether static or dynamic/realtime, anyway.
What are folks here using & happy with?