Apps script gmail to crm integration

Code.gs

function loadAddOn(event) {
  var accessToken = event.gmail.accessToken;
  var messageId = event.gmail.messageId;
  GmailApp.setCurrentMessageAccessToken(accessToken);
  var mailMessage = GmailApp.getMessageById(messageId);
  var from = mailMessage.getFrom()
  var mail = from.split("<")[1].split(">")[0];
  var name = from.split("<")[0];

  var sendDataButton = CardService.newTextButton()
      .setText("Create new contact")
      .setOnClickAction(CardService.newAction().setFunctionName("sendDataToEndpoint")
      .setParameters({}));

  
    var senderNameInput = CardService.newTextInput()
      .setFieldName("senderMailField")
      .setTitle("New contacts mail")
      .setValue(mail)
      .setHint("Add the sender's mail");

    var senderMailInput = CardService.newTextInput()
      .setFieldName("senderNameField")
      .setTitle("New contacts name")
      .setValue(name)
      .setHint("Add the sender's name");


  var card = CardService.newCardBuilder()
      .setHeader(CardService.newCardHeader().setTitle("Create Pipedrive lead"))
      .addSection(CardService.newCardSection()
          .addWidget(CardService.newTextParagraph().setText("Calling this function will automatically create a new contact and a new lead for the sender of this mail"))
          .addWidget(CardService.newTextParagraph().setText("The email is from: " + name))
          .addWidget(CardService.newTextParagraph().setText("The address is: " + mail))
          .addWidget(senderNameInput)
          .addWidget(senderMailInput)
          .addWidget(sendDataButton)) // Add the send data button to your card
      .build();

  return [card];
}

function sendDataToEndpoint(e) {
  var name = e.formInput.senderNameField;
  var mail = e.formInput.senderMailField; // Use the field name set with setFieldName
  
  var options = {
    method: "post",
    contentType: "application/json",
    muteHttpExceptions: true
  };

  // change to your endpoint
  var endpoint = "$MYENDPOINT$/create_contact?email=" + mail + "&name=" + name; 
  
  UrlFetchApp.fetch(endpoint, options);
  
  return CardService.newActionResponseBuilder()
    .setNotification(CardService.newNotification()
      .setText("Data sent successfully!"))
    .build();
}