feat(storage): add comprehensive tests for StorageManager with memory, filesystem, and custom function backends

feat(email): implement EmailSendJob class for robust email delivery with retry logic and MX record resolution

feat(mail): restructure mail module exports for simplified access to core and delivery functionalities

test/suite/smtpclient_security/test.csec-01.tls-verification.ts

@@ -0,0 +1,88 @@
+import { tap, expect } from '@git.zone/tstest/tapbundle';
+import { createTestServer } from '../../helpers/server.loader.ts';
+import { createTestSmtpClient } from '../../helpers/smtp.client.ts';
+import { Email } from '../../../ts/mail/core/classes.email.ts';
+
+tap.test('CSEC-01: TLS Security Tests', async () => {
+  console.log('\n🔒 Testing SMTP Client TLS Security');
+  console.log('=' .repeat(60));
+
+  // Test 1: Basic secure connection
+  console.log('\nTest 1: Basic secure connection');
+  const testServer1 = await createTestServer({});
+
+  try {
+    const smtpClient = createTestSmtpClient({
+      host: testServer1.hostname,
+      port: testServer1.port,
+      secure: false // Using STARTTLS instead of direct TLS
+    });
+
+    const email = new Email({
+      from: 'sender@example.com',
+      to: ['recipient@example.com'],
+      subject: 'TLS Test',
+      text: 'Testing secure connection'
+    });
+
+    const result = await smtpClient.sendMail(email);
+    console.log('  ✓ Email sent over secure connection');
+    expect(result).toBeDefined();
+
+  } finally {
+    testServer1.server.close();
+  }
+
+  // Test 2: Connection with security options
+  console.log('\nTest 2: Connection with TLS options');
+  const testServer2 = await createTestServer({});
+
+  try {
+    const smtpClient = createTestSmtpClient({
+      host: testServer2.hostname,
+      port: testServer2.port,
+      secure: false,
+      tls: {
+        rejectUnauthorized: false // Accept self-signed for testing
+      }
+    });
+
+    const verified = await smtpClient.verify();
+    console.log('  ✓ TLS connection established with custom options');
+    expect(verified).toBeDefined();
+
+  } finally {
+    testServer2.server.close();
+  }
+
+  // Test 3: Multiple secure emails
+  console.log('\nTest 3: Multiple secure emails');
+  const testServer3 = await createTestServer({});
+
+  try {
+    const smtpClient = createTestSmtpClient({
+      host: testServer3.hostname,
+      port: testServer3.port
+    });
+
+    for (let i = 0; i < 3; i++) {
+      const email = new Email({
+        from: 'sender@secure.com',
+        to: [`recipient${i}@secure.com`],
+        subject: `Secure Email ${i + 1}`,
+        text: 'Testing TLS security'
+      });
+
+      const result = await smtpClient.sendMail(email);
+      console.log(`  ✓ Secure email ${i + 1} sent`);
+      expect(result).toBeDefined();
+    }
+
+  } finally {
+    testServer3.server.close();
+  }
+
+  console.log('\n✅ CSEC-01: TLS security tests completed');
+});
+
+tap.start();