Google script how to make a loop from an existing script?

Question

Google

I achieved with this script that the text of the letter would be copied to google docs, the task is that the script would go through all the letters and copy the text to google docs

function myFunction() {
var doc = DocumentApp.getActiveDocument();
var body = DocumentApp.getActiveDocument().getBody();

var thread = GmailApp.getInboxThreads(2,1)[0]; // get first thread in inbox
 var message = thread.getMessages()[0]; // get first message
 body.insertParagraph(0, message.getBody());
 Logger.log(message.getBody()); // log contents of the body

Answer 1

You are currently reading the first email in the first thread:
var thread = GmailApp.getInboxThreads(2,1)[0]; // get first thread in inbox
var message = thread.getMessages()[0]; // get first message
You need to decide whether all the letters you need (filter by unread, read a specific label, etc.)
Then, in the array of letters you need, you need to create a loop like:
for (i=0; i<=Number of letters ( chains) in an array; i++) { message
processing
}
Ready to help with the implementation on a specific script [email protected]