docs: function prepairRcpt(cmds) {
  	var idx
  	var rcpts
  
  	for (var i = 0, l = cmds.length; i < l; i++) {
  		if (cmds[i].indexOf(CMD_RCPT_TO) > -1) {
  			idx = i
  			rcpts = cmds[i]
  			break
  		}
  	}
  
  	if (rcpts) {
  		rcpts = rcpts.substr(CMD_RCPT_TO.length).split(/;\s*/).map(function (rcpt) {
  			var address = /.*\<(.+@.+)\>.*/.exec(rcpt)
  			address = address && address[1] || rcpt
  			return CMD_RCPT_TO + address
  		})
  		cmds.splice.apply(cmds, [idx, 1].concat(rcpts))
  	}
  }