there was a chap on here, Magic someone, maybe steve? i cant remember, has a brilliant wasy of doing it, hes signed up wih some message service online, hes got different groups and he goes online, clicks the group and it sends them all a text like
"Hi its the window cleaner here, will be cleaning your windows tommorow, please make sure all gates are open. Many Thanks Steve Magic window cleaning"
really good i thought. but personally, when they say "can you ring me?" i role my lip up an im like "errr well"
i really dont like it too much hassle imo