Hey - WRT what's in it for the maintainer.. I run this on some servers that run a bunch of other sites.. and this was just a tiny project that I created because I was running a bunch of stuff on some servers that only had access to the internet through a proxy. Some of the things I was trying to run took a long time (10+ hours). So I wanted to get an easy notification and found signing up for other services to be a pain (need card info etc, because they expect bulk delivery)

WRT putting sensitive info through it... I completely agree, I wouldn't advise this - at the same time, I'd never advise sending any sensitive info over any email (without using GPG). The reason for suggesting custom content was, if I had several commands going that would send notifications, I wanted an easy way to identify which one completed (even just sending a number or simple word so I could idenity if). The idea of piping to it was simply an idea of how I could expand it and suite other people's use-cases.

Hope this all makes sense.. so no mass data gathering etc, and, as I say, I wouldn't advise putting any sensitive info through it anyway :)