Need help with Google Sheet

I have use this code in Google Sheet to send Email automatically !!

var EMAIL_SENT = 'EMAIL_SENT';

/**

  • Sends non-duplicate emails with data from the current spreadsheet.
    */
    function sendEmails2() {
    var sheet = SpreadsheetApp.getActiveSheet();
    var startRow = 2; // First row of data to process
    var numRows = 100; // Number of rows to process
    // Fetch the range of cells A2:B3
    var dataRange = sheet.getRange(startRow, 2, numRows, 5);
    // Fetch values for each row in the Range.
    var data = dataRange.getValues();
    for (var i = 0; i < data.length; ++i) {
    var row = data[i];
    var emailAddress = row[0]; // First column
    var message = row[1]; // Second column
    var emailSent = row[2]; // Third column
    if (emailSent !== EMAIL_SENT) { // Prevents sending duplicates
    var subject = 'Sending emails from a Teacher';
    MailApp.sendEmail(emailAddress, subject, message);
    sheet.getRange(startRow + i, 4).setValue(EMAIL_SENT);

    SpreadsheetApp.flush();
    }
    }
    }
    And now I want to run this code in App Inventor. Can anyone help me with this ? I really need your help !! Thanks all !!

I think you can use Google Apps Script.

See here

I want to link this Script into App Inventor. Help me !!