Function send 

pub async fn send(
    homes: &HarnessHomes,
    caller: &Caller,
    to: &str,
    body: &str,
    options: SendOptions,
) -> Result<Outcome>

Send body from caller to to (an address, name@machine, or a name unique on this machine): through Teams when to is on another machine, else through the router’s door here. The one send every sender uses.