Feature request: non interactive mode

[deajan]

Hello,

I'm using mailsend in my smartmontools-win project since a couple of years now. Awesome little program, i'd just enjoy a --non-interactive parameter which leads mailsend to not ask anything on console and fail if not all arguments are passed.

This way, when using mailsend in some automatic way (i.e. system call from a program) it would not block the program if anything is missing.

Thanks for the time and effort you put into this program !