To use 189.cn in an email client other than its default webmail, you need three coordinated blocks of settings: the incoming server configuration (IMAP for synchronized access across multiple devices, or POP3 for downloading messages to a single device), the outgoing SMTP configuration, and the shared authentication and encryption layer. This page documents each block precisely for 189.cn.
189.cn operates in China and its technical setup is shaped by Chinese data-protection and telecom regulations. Compared to global providers with auto-discovery in every client, regional online mail services often require manual configuration; the values below have been captured and verified so you can enter them once and move on.
The remainder of this guide breaks down the exact server hostnames, ports, and encryption modes for 189.cnβs IMAP, POP3, and SMTP endpoints, followed by a FAQ addressing the most common connection issues users report.
Key Takeaways
- Use pop.189.cn (port 110/995 SSL) for POP3, imap.189.cn (port 993 SSL) for IMAP, and smtp.189.cn (ports 25/465 SSL/587 TLS) for SMTP.
- POP3 downloads emails and removes them from the server; IMAP syncs emails across multiple devices in real-time.
- SMTP requires authentication with your full email address and password to send emails securely via ports 465 (SSL) or 587 (TLS).
- Enable two-factor authentication (2FA) on 189.cn accounts and use app-specific passwords for enhanced email client security.
- Configure email clients like Thunderbird or EmClient with these servers and ports for seamless sending and receiving of 189.cn emails.
89.cn Server Configuration Details
The cn server configuration details provide essential information for setting up email accounts on the 189.cn domain. These details mainly include server addresses and port numbers required for connecting via POP3 and SMTP protocols. Correct configuration guarantees reliable and secure email transmission and retrieval within the 189.cn network.
| Protocol | Server Address | Port Number |
|---|---|---|
| POP3 | pop.189.cn | 110 |
| POP3 SSL | pop.189.cn | 995 |
| SMTP | smtp.189.cn | 25 |
| SMTP SSL | smtp.189.cn | 465 |
This table clarifies the essential servers and ports necessary for both standard and SSL-encrypted connections, enabling users to configure their email clients accurately.
IMAP Server Connection Details
Alongside POP3 and SMTP protocols, 189.cn supports IMAP for email access, allowing users to manage their messages directly on the server. This facilitates synchronization across multiple devices and real-time folder updates.
The IMAP server connection details are essential for proper email client configuration.
Key IMAP settings for 189.cn include:
- IMAP Server Address: imap.189.cn
- Port Number: 993 (SSL/TLS enabled)
- Authentication Method: Normal password login
- Security Protocol: SSL/TLS encryption
Using these settings guarantees secure and efficient access to the 189.cn email account via IMAP.
The configuration supports consistent message management without downloading emails locally, ideal for users requiring multi-device synchronization.
POP3 Server Connection Details
How can users retrieve their emails directly to a single device? By configuring the POP3 server settings, 189.cn users can download messages from the mail server to their local device, enabling offline access and centralized management.
The POP3 protocol removes emails from the server once downloaded, which is ideal for single-device usage.
Key POP3 server connection details include:
- Server address: pop.189.cn
- Port number: 110 (non-secure) or 995 (SSL/TLS secure)
- Authentication: Requires full email address and password
- Security: SSL/TLS encryption recommended for secure data transfer
These settings ensure reliable access to email content while maintaining user privacy during communication with the 189.cn mail server.
SMTP Server Configuration Details
An SMTP server plays a crucial role in sending outgoing emails for 189.cn users by handling message transmission to recipients’ mail servers. Proper configuration guarantees reliable email delivery and prevents issues like delays or failures.
The key SMTP server settings for 189.cn include:
- Server address: smtp.189.cn
- Port numbers: 465 (SSL) or 25 (non-secure)
- Encryption method: SSL/TLS for secure connections
- Requires authentication: Yes, with the full email address and password
These parameters must be accurately entered in email clients or applications to establish a successful connection. Incorrect details can result in sending errors or connection failures.
Understanding these settings is essential for uninterrupted email communication through 189.cnβs SMTP service.
IMAP, POP3 and SMTP Integration into Gmail
Configure Gmail with external IMAP/POP3/SMTP to send/receive emails from your custom domain through Gmail’s interface. Perfect for professionals managing multiple accounts in one place.
- Google Account β Security β App passwords (2-Step Verification must be enabled).
- Generate App Password for “Mail” β copy 16-character password.
- Gmail β Settings β See all settings β Forwarding and POP/IMAP.
- Enable IMAP β Save Changes.
- Incoming (IMAP):
[IMAP SERVER]:993 SSL| Outgoing (SMTP):[SMTP SERVER]:587 STARTTLS. - Use your full email + App Password (not regular password) for authentication.
β Gmail Result: Send/receive custom domain email directly in Gmail interface with full search/folder integration.
WordPress SMTP Plugin Configuration (WP Mail SMTP + MailPoet)
Configure SMTP in WordPress to fix email delivery issues and prevent spam folder placement. WP Mail SMTP and MailPoet ensure reliable transactional emails, contact forms, and newsletters deliver successfully.
- Install and activate WP Mail SMTP or MailPoet plugin from your WordPress dashboard.
- Navigate to WP Mail SMTP β Settings or MailPoet β Settings β Sending tab.
- Select “Other SMTP” as your mailer method from the dropdown.
- Enter SMTP settings with Port
587and STARTTLS encryption (when available). - Input your full email address and password in the authentication fields.
- Click Save Settings and send a test email to verify the configuration works.
β Result: WordPress contact forms, user registrations, and newsletter emails now deliver reliably via your SMTP server.
This configuration includes these plugins and tools within WordPress:
- HappyForms
- Elementor Forms
- Gravity Form
- WooCommerce Checkout Form
- Contact Form by BestWebSoft
- Fluent Forms
- Contact Form 7
- WPForms
- Ninja Forms
- Default WordPress Reg Form
- Forminator Forms
- Formidable Form
- WordPress Comment Form
- Mail Mint Form
Thunderbird OAuth2 Email Setup (IMAP + SMTP)
Secure IMAP & SMTP using OAuth2 token authentication in Thunderbird. This modern method eliminates password storage for enhanced security.
- Open Thunderbird β Account Settings β Account Actions β Add Mail Account.
- Enter your email address and click Continue to begin setup.
- Select IMAP protocol and choose OAuth2 authentication method.
- Thunderbird opens a browser window β log in to your provider β Grant access permissions.
- Automatic configuration applies: Incoming: use the IMAP server address from the settings table above, port 993, SSL
- Click Done β Thunderbird begins syncing folders and emails immediately.
OAuth2 advantage: Token-based authentication enhances security over traditional password methods while maintaining full functionality.
Outlook IMAP, POP3 & SMTP Setup (Auto + Manual)
Outlook configuration supports both automatic server detection and manual IMAP/POP3/SMTP settings for complete control over your email setup.
π Auto Setup (Recommended):
- Go to File β Add Account β Enter your email address + password.
- Outlook automatically detects IMAP, POP3, and SMTP server settings.
- Click Connect β setup completes in approximately 30 seconds.
βοΈ Manual Setup (Advanced Users):
- Authentication: Use your full email address + password for both servers
BlueMail Two-Factor Authentication + OAuth2 Setup
BlueMail security setup combines OAuth2 authentication with two-factor authentication (2FA) for maximum account protection.
- Open BlueMail β Account Settings β Security β Enable Two-Factor Authentication.
- Link your phone number or authenticator app for 2FA verification codes.
- Add email account β Choose OAuth2 or manual server configuration.
- Enter server details from the table above
- Complete login with 2FA code β enhanced security layer activated.
Apple Mail IMAP Configuration (iCloud + Manual)
Setup IMAP in Apple Mail for seamless synchronization across Mac, iPhone, and iPad devices with full folder support.
- Open Apple Mail β Mail β Add Account β Other Mail Account.
- Enter your name, email address, and password β click Continue.
- Select IMAP account type β Incoming server.
- Next: Outgoing server
- Click Sign In β Mail verifies settings and begins folder synchronization.
iOS Mail App Setup (iPhone/iPad)
iPhone/iPad Mail configuration syncs IMAP folders across all Apple devices with native push notifications.
- Go to Settings β Mail β Accounts β Add Account β Other.
- Enter name, email, password β Next.
- Account Type: IMAP β Incoming:
[IMAP SERVER]Port993SSL. - Enter your outgoing SMTP server and port.
- Next β Save β iOS verifies and syncs immediately.
Push enabled automatically: new emails appear instantly on Lock Screen.
Android Mail App Configuration
Android Gmail/Email app setup works with any IMAP/SMTP provider for native device integration.
- Go to: Settings β Accounts β Add Account β Email (or Gmail app).
- Enter email + password β Next.
- Account Type: IMAP
- Outgoing server details β Require authentication.
- Next β Sign In β Android syncs contacts/calendar if enabled.
Sync interval: 15min default (battery optimized) – change in Account Sync settings.
eM Client Manual IMAP & POP3 Sync Configuration
Configure your email settings on eM Client with either automatic setup or through precise IMAP/POP3 server settings for reliable email synchronization and full folder support.
- Click New Account β Mail
Authentication requires full email address + password for both incoming and outgoing servers.Click Next β Finish β Send/Receive All Folders to begin synchronization.
Mailbird OAuth2 IMAP & SMTP Integration
Secure Mailbird setup using OAuth2 authentication eliminates password storage while providing full IMAP/SMTP functionality.
- Mailbird β Add Account β Enter your email address to begin.
- Choose Manual Setup β OAuth2 authentication method from options.
- Browser opens your provider’s login page β enter credentials β Authorize Mailbird.
- Mailbird receives access token and automatically configures IMAP/SMTP servers.
- Setup completes β full email synchronization begins automatically.
Mailspring OAuth2 IMAP Configuration
Mailspring OAuth2 setup provides secure email access without storing passwords directly in the application.
- Add new email account β Select Custom IMAP configuration option.
- Incoming
IMAP SERVERand outgoingSMTP SERVER. - Mailspring prompts OAuth2 authorization via browser window for secure login.
- Log into your provider account and grant Mailspring access permissions.
- Mailspring automatically manages authentication tokens β seamless email access established.
Postbox Manual IMAP Synchronization
Postbox IMAP setup with manual synchronization control for precise email folder management and immediate updates.
- Add IMAP account β Enter IMAP Server details.
- Outgoing SMTP with full email authentication.
- Postbox connects and displays folder structure automatically.
- Right-click any folder β Get Messages for immediate manual synchronization.
- Manual sync updates local mailbox instantly with server changes (read status, deletions, organization).
SendBlaster SMTP Configuration (Bulk Email)
Bulk email SMTP configuration in SendBlaster requires precise server authentication for reliable campaign delivery.
- Open SendBlaster β Settings β SMTP Configuration section.
- Enter SMTP Server and Port: do not forget to Enable TLS encryption.
- Authentication: Your full email address + password (required).
- Click Test Connection β verify green success indicator appears.
- Save settings β SendBlaster ready for bulk email campaigns and newsletters.
MailJerry IMAP Real-Time Synchronization
MailJerry IMAP setup enables real-time access to email folders stored on your provider’s server across all devices.
- Incoming Server and encryption required.
- Authentication: Full email address + password for secure connection.
- Enable real-time folder synchronization settings in MailJerry preferences.
- Folders update instantly with new messages, read status, and deletions across devices.
Clean.email OAuth2 Synchronization Setup
Clean.email OAuth2 setup provides secure mailbox access without sharing passwords directly with the application.
- Add new account β Select OAuth2 authorization method.
- Your provider opens login portal β enter credentials securely.
- Grant Clean.email permissions for email read/write access.
- OAuth2 token enables real-time message management, filtering, and organization.
- Setup complete β Clean.email maintains secure, ongoing mailbox synchronization.
Common IMAP/POP3/SMTP Troubleshooting
- Authentication failed: Always use your complete email address, never just the username portion.
- Port blocked by ISP: Try alternative SMTP port as fallback.
- SSL certificate errors: Ensure certificate validation is enabled in client settings.
- Slow or no IMAP sync: Check folder subscriptions and enable all folders in client settings.
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Frequently Asked Questions
How Do I Recover a Forgotten 189.Cn Email Password?
To recover a forgotten 189.cn email password, the user should visit the official 189.cn password recovery page, verify identity through linked phone or security questions, then follow instructions to reset the password securely.
Can I Access 189.Cn Email on Mobile Devices?
Yes, 189.cn email can be accessed on mobile devices by configuring the email client with the appropriate server settings. Users must input correct POP3, IMAP, or SMTP details to synchronize and send emails efficiently on smartphones or tablets.
Is There a Limit on the Size of Emails I Can Send?
189.cn typically imposes a size limit on sent emails, often around 20 to 25 MB, including attachments. Users should verify with the latest provider guidelines, as limits may vary or be updated to guarantee smooth email delivery.
How Do I Set up Email Filters in 189.Cn?
To set up email filters in 189.cn, the user accesses the email settings, navigates to the filter or rules section, creates new conditions based on sender or subject, and defines actions like moving or deleting messages automatically.
What Should I Do if My 189.cn Email Is Hacked?
If 189.cn email is hacked, the user should immediately change the password, enable two-factor authentication, review account activity, update security questions, inform contacts about potential spam, and contact 189.cn support for further assistance and account recovery.
About This Guide
The 189.cn email settings on this page were last verified on April 12, 2026 against the provider’s official help documentation, publicly available postmaster resources, and independent user setup reports. Email server configurations rarely change once established, most providers issue major updates only every one to two years, typically tied to phasing out unencrypted protocols or migrating to new mail infrastructure. SMTPedia re-verifies these settings quarterly and after any announced changes from 189.cn. If you find a discrepancy between what is documented here and what 189.cn currently requires, please report it so we can update the reference.
Other webmails in China:
About the Author
Alaa Β· LinkedIn
Email infrastructure specialist with 8+ years of hands-on experience in SMTP, deliverability, and email verification. Iβve configured and troubleshot mail systems across Postfix, Exchange, and cloud relays, managed IP reputation and warmup campaigns, and built verification pipelines processing millions of addresses. My work spans DNS authentication (SPF, DKIM, DMARC, BIMI), bounce handling, blocklist monitoring, and compliance frameworks including CAN-SPAM and GDPR. I write every article on SMTPedia to give email professionals, developers, and marketers the accurate, RFC-grounded reference they need.
About SMTPedia
SMTPedia is an independent email industry reference covering SMTP, IMAP, POP3, email deliverability, marketing platforms, DNS authentication, and email verification. Every article is researched from official provider documentation, IETF RFCs, and industry best practices. Settings and configurations are verified quarterly.
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