08-05-2014, 01:30 PM
It should already be possible or mostly possible to do this with PDAs. They already have the obnoxious ringtone and retain messages, it's already possible to do things like spoofed messages via PDA hacking, and although I haven't figured out the proper command for it yet, it should theoretically be possible to craft a PDA packet that sends a group mail to specific departments instead of specific people (some station functions, like the morgue chute, already do this automatically).