(Node.js) IMAP Capability

Demonstrates how to send the CAPABILITY command to request a listing of capabilities that the IMAP server supports. A capability name which begins with "AUTH=" indicates that the server supports that particular authentication mechanism.

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

    var imap = new chilkat.Imap();

    // Use TLS
    imap.Ssl = true;
    imap.Port = 993;
    var success = imap.Connect("MY-IMAP-DOMAIN");
    if (success !== true) {
        console.log(imap.LastErrorText);
        return;
    }

    // Authenticate
    success = imap.Login("MY-IMAP-LOGIN","MY-IMAP-PASSWORD");
    if (success !== true) {
        console.log(imap.LastErrorText);
        return;
    }

    // Get the list of capabilities:
    var caps = imap.Capability();
    console.log("Capabilities: " + caps);

    // Here is an example of the string returned:
    // * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 
    // UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH UTF8=ACCEPT APPENDLIMIT=35882577
    // LIST-EXTENDED LIST-STATUS

    // Chilkat v9.5.0.58 introduces the HasCapability method to
    // check to see if a particular capability exists:
    if (imap.HasCapability("QUOTA",caps) == true) {
        console.log("IMAP server supports the QUOTA extension.");
    }

    if (imap.HasCapability("IDLE",caps) == true) {
        console.log("IMAP server supports IDLE.");
    }

    // Disconnect from the IMAP server.
    success = imap.Disconnect();

}

chilkatExample();