code: function removeToAddress(inboundMessage, outboundMessage) {
    if (inboundMessage && _.has(inboundMessage, 'to')) {
      outboundMessage.recipients = _.filter(outboundMessage.recipients || [], (recipient) => {
        return recipient.email !== inboundMessage.to.email;
      });
      outboundMessage.cc = _.filter(outboundMessage.cc || [], (recipient) => {
        return recipient.email !== inboundMessage.to.email;
      });
    }
  
    return outboundMessage;
  }
docs: gets the address that received the inbound message and removes it from the outbound recipients and cc lists
  (we don't wanna send the email to ourselves)
  
  @param {InboundMessage} inboundMessage
  @param {OutboundMessage} outboundMessage
  @returns {OutboundMessage} outboundMessage