Dart

Verify Connectivity to the POP3 Server

Demonstrates the Chilkat MailMan.VerifyPopConnection method, which tests whether a TCP/IP connection can be established with the configured POP3 server. It verifies connectivity only — it does not authenticate. This example configures the POP3 host and checks whether it can be reached.

Background: This is the POP3 counterpart to VerifySmtpConnection. It answers the first diagnostic question — can the client reach the POP3 server on the configured host and port and complete the TLS handshake? A failure here indicates a network, firewall, DNS, port, or certificate problem rather than a credentials issue, which VerifyPopLogin checks next.

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the MailMan.VerifyPopConnection method, which tests whether a TCP/IP
  // connection can be established with the configured POP3 server.  It verifies connectivity
  // only (it does not authenticate).

  final mailman = CkMailMan();

  // Configure the POP3 server connection.
  mailman.mailHost = 'pop.example.com';
  mailman.mailPort = 995;
  mailman.popSsl = true;

  // Test connectivity to the POP3 server.
  final connected = mailman.verifyPopConnection();

  if (connected) {
    print('Successfully connected to the POP3 server.');
  } else {
    print('Could not connect to the POP3 server.');
  }
}