Forwarding Gmail Emails to LINE and Notification

Using Google Apps Script, you can receive LINE notifications when Gmail arrives.

In the following example, we use ‘subject:(Keepa.com) ’, which is configured to notify LINE when email from Keepa is received.

Keepa is set to notify on my computer, so I notice it when I’m at my computer, but I can’t check it on my smartphone when I’m out or in the bath. However, by notifying through LINE, I can check it by just opening LINE on my smartphone.

Receiving LINE Notifications when Gmail Arrives using Google Apps Script

// Notify Gmail to LINE based on search results
// Search
var FindSubject = 'subject:(Keepa.com) ';

function getMail(){

  // Search and get threads with the specified subject
  var myThreads = GmailApp.search(FindSubject, 0, 10);
  // Get messages from threads and store in 2D array
  var myMessages = GmailApp.getMessagesForThreads(myThreads);

  for(var i in myMessages){
    for(var j in myMessages[i]){

      // Process only messages without stars   
      if(!myMessages[i][j].isStarred()){

        var strDate　=　myMessages[i][j].getDate();
        var strSubject　=　myMessages[i][j].getSubject();
        var strMessage　=　myMessages[i][j].getPlainBody().slice(0,200);

        // Send message to LINE
        sendLine(strDate,strSubject,strMessage);

        // Star processed messages
        myMessages[i][j].star();

      }
    }
  }
}

function sendLine(strDate,strSubject,strMessage){

  // Token for sending to Line
  var strToken = "";
  var options =
   {
     "method"  : "post",
     "payload" : "message=" + strDate + strSubject + strMessage,
     "headers" : {"Authorization" : "Bearer "+ strToken}

   };

   UrlFetchApp.fetch("https://notify-api.line.me/api/notify",options);
}

1. Open the editor from a spreadsheet and copy-paste the above code.
2. Access [https://notify-bot.line.me/ja/](https://notify-bot.line.me/ja/) to issue a LINE token.
3. Fill in // Search and // Token for sending to Line.
4. Set it to run periodically in Edit > Current Project's Triggers.

I referred to this.