(Node.js) Read All Email from POP3 Inbox by Message Numbers

Demonstrates how to read all of the email from a POP3 inbox by fetching each email by it's message number.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var mailman = new chilkat.MailMan();

    // Set the POP3 server's hostname
    mailman.MailHost = "pop.someMailServer.com";

    // Set the POP3 login/password.
    mailman.PopUsername = "myLogin";
    mailman.PopPassword = "myPassword";

    // Get the number of messages in the mailbox.
    var numMessages = mailman.GetMailboxCount();

    // Message numbers are specific to a POP3 session. 
    // If a maildrop (i.e. inbox)  contains 10 messages, 
    // the message numbers will be 1, 2, 3, ... 10. 
    // If message number 1 is deleted and a new POP3 session 
    // is established, there will be 9 messages numbered 1, 2, 3, ... 9. 

    var i = 1;

    // email: Email
    var email;
    while (i <= numMessages) {

        email = mailman.FetchByMsgnum(i);
        if (mailman.LastMethodSuccess !== true) {
            console.log(mailman.LastErrorText);
            return;
        }

        console.log(email.From + ": " + email.Subject + "\n");

        i = i+1;

    }


}

chilkatExample();