Email Settings GuideQuick answer: 139 Mail reads over IMAP on imap.139.com port 993 or POP on pop.139.com port 995. Sending is over smtp.139.com port 465 with SSL. Turn the service on in webmail first, use your mobile number and 139.com as the username and the authorization code as the password. To keep your number private, send with an alias.
What Changed Recently#
What trips people up on 139 Mail is not the server names but how you sign in. Here is the current status and what it means for your setup.
Worth knowing
The service starts off. IMAP, POP and SMTP are turned off by default. Turn on the IMAP or POP service in webmail before a client can connect.
Worth knowing
Sign in with an authorization code. When you turn the service on, 139 gives you an authorization code. That code is the password your mail app uses, not your login password.
Worth knowing
Your address is your number. The address is your China Mobile number and 139.com, so type the full number in as the username.
Before You Begin#
Handle these two basics before anything else. Skip them and your email app will reject the connection even when every server value is correct.
1. Turn on the service
In webmail, open the account and mail-protocol settings and switch on the IMAP or POP service. It is off until you do.
Where: mail.10086.cn settings
2. Get the authorization code
Turning the service on gives you an authorization code. Keep it to hand, since it is the client password.
Note: the username is your number and @139.com
About 139 Mail#
139 Mail is the free mail service from China Mobile. Every China Mobile number has one. The address is the number itself, such as 13800138000@139.com. It reads in Outlook, Apple Mail or Thunderbird over IMAP or POP once you turn the service on.
Reading is IMAP on imap.139.com or POP on pop.139.com. Sending is SMTP on smtp.139.com. Each server also answers on the 10086.cn name. Before any of this works you turn on the IMAP or POP service in webmail and generate an authorization code. That code is the password your mail app uses, not the one you type into the website.
| Protocol | Server | Port |
|---|---|---|
| IMAP | imap.139.com | 993 SSL |
| POP | pop.139.com | 995 SSL |
| SMTP | smtp.139.com | 465 SSL |
139 Mail Webmail Login#
You can always read your mail in a browser. The official sign in pages are:
Your Address Is Your Mobile Number#
139 Mail comes with a China Mobile number. The address is the number itself plus 139.com, so 13800138000 becomes 13800138000@139.com. That is the username on every device. Webmail signs in with the number and a text-message code.
| Where | Username | Password |
|---|---|---|
| Webmail | Your mobile number | A text-message code or your login password |
| Mail app | Your number and @139.com | The authorization code |
139 Mail IMAP Settings#
IMAP is the incoming choice 139 Mail points most people to. Mail stays put on the server, so a laptop and a phone read one shared inbox. The servers are imap.139.com, pop.139.com and smtp.139.com.
| IMAP Server | imap.139.com | |
| Port | 993 | |
| Encryption | SSL/TLS (required) | |
| Username | Your full email address, including @139.com | |
| Password | Your mailbox password | |
| Authentication | Required |
139 Mail POP3 Settings#
POP3 downloads mail to 1 device. Pick it only if you want a local copy on a single computer. Not sure? See the comparison below.
| POP3 Server | pop.139.com | |
| Port | 995 | |
| Encryption | SSL/TLS (required) | |
| Username | Your full email address | |
| Password | Your mailbox password |
139 Mail SMTP Settings#
SMTP handles outgoing mail. If you can read mail but not send it, the problem is here.
| SMTP Server | smtp.139.com | |
| Port (SSL) | 465 | |
| Encryption | SSL or STARTTLS (required) | |
| Username | Your full email address | |
| Password | Same as incoming mail | |
| Authentication | Required. Switch on outgoing server authentication in the client. |
465 with SSL. Many home connections block port 25. Confirm outgoing authentication is on.
Check 139 Mail IMAP Settings Online#
You don't need to download anything to check 139 Mail IMAP settings online. This page is the lookup: every value is verified, current and copyable straight from your browser. Not sure your address uses 139 Mail servers? Type it below and find out instantly.
Does my email address use these settings?
Runs in your browser only. Your address is never sent anywhere or stored.
Want to verify the account itself before configuring an app? Sign in at 139 Mail webmail, which confirms your address and password work, then confirm an app password exists. If both pass, any email app connects with the tables above.
Look Up IMAP Settings for Any Email Domain#
This page covers 139 Mail. For every other address, work email on a company domain included, we run a free online lookup database: imapsettings.com.
imapsettings.com
Complete email settings database, by Univik
Enter any email address and get the incoming and outgoing server settings for that domain in 1 step:
Your address is used only to find the settings for that domain. Nothing is stored or shared.
Username and Password#
The username is your mobile number with 139.com on the end, such as 13800138000@139.com. The password a mail app needs is the authorization code, a string 139 shows you when you turn on the service. Your ordinary login password is for the website.
Username is number and 139.com
Type the whole number followed by @139.com. Put the same address on reading and sending.
The 10086.cn server names work with the same address.
Use the authorization code
Turn on the IMAP or POP service in webmail, then 139 gives you an authorization code. Paste that where the app asks for a password.
Your website login password does not work in a mail app.
Set Up 139 Mail in Email Clients#
The servers and ports are always the same. Only the menus differ. Jump to your app:
Outlook (Windows and Mac)
- In Outlook select Add Account, then turn on manual setup under Advanced options.
- Choose IMAP and set incoming to
smtp.139.comon 993 with SSL. - Set outgoing to the same server on 465 with SSL.
- Enter the full address and mailbox password when Outlook prompts you.
- Send a test message to yourself to prove both paths.
Apple Mail (macOS)
- In Mail select Add Account, then pick Other Mail Account.
- Give your name, 139 Mail address and password, then continue.
- Enter smtp.139.com with SSL on incoming and outgoing.
- Keep the SSL ports so nothing sends in plain text.
- Save and wait for the mailbox to load.
iPhone and iPad
- In Settings open Mail, then tap Mail Accounts and Add Account.
- Tap Other then Add Mail Account and fill your details.
- Keep IMAP chosen and put smtp.139.com in both server boxes.
- Leave the secure ports iOS fills, since 139 Mail expects SSL.
- Tap Save and let iOS run its check.
Android
- Open your mail app and tap Add account, then Other or IMAP.
- Put in your address and password. Switch to manual setup if it stalls.
- For incoming use smtp.139.com on 993 over SSL.
- For outgoing use smtp.139.com on 465 over SSL.
- Save and swipe down to fetch your mail.
Thunderbird
- In Thunderbird pick Account Actions, then Add Mail Account.
- Type your name, 139 Mail address and password, then Continue.
- Wait for detection, then make sure IMAP with SSL is picked.
- If detection fails, type smtp.139.com in yourself.
- Hit Done and the folders fill in on the first sync.
139 Mail Webmail Settings#
Server settings connect your apps. The controls here shape how the mailbox acts on its own. They live in 139 webmail at websmtp.139.com.
Signature
Add one in the webmail preferences. It rides on mail sent from webmail. A desktop app keeps a signature of its own.
Vacation Auto Reply
Set an autoresponder in 139 webmail and give it start and end dates. The 139 Mail server delivers it, so it fires even when your machine is off.
Filters and Folders
Create filters in 139 webmail. A server side rule sorts a message ahead of any device fetching it. A rule set inside an app only works while that app is running.
Spam and Blocked Senders
139 Mail filters spam on incoming mail. Set the threshold and block unwanted senders in 139 webmail. Flagged mail lands in the junk folder for a look.
POP3 vs IMAP#
| Feature | IMAP | POP3 |
|---|---|---|
| Where mail lives | On the 139 Mail server | Downloaded to 1 device |
| Multiple devices | ✅ Everything stays in sync | ❌ Each device sees different mail |
| Sent and deleted mail | ✅ Synced everywhere | ⚠️ Stays only on that device |
| Offline reading | ⚠️ Cached mail only | ✅ Full local copy |
| Server storage used | Yes, counts against your quota | Can be freed after download |
| Best for | Phone + computer, everyday use | Single PC, local archives |
139 Mail Sending and Storage Limits#
A few limits are worth knowing before you bulk forward or move a mailbox. On shared plans 139 Mail caps outbound mail to protect the server reputation:
| Outbound cap | Applies on shared plans |
| Username | Full email address |
| SMTP port | 465 SSL |
| Mailbox storage | Set by your hosting plan |
| Over the outbound cap | Sending pauses for a while |
Troubleshooting 139 Mail Connections#
Find the exact error your email app shows, then apply the fix:
| Error you see | What it means | Fix |
|---|---|---|
| Username or password rejected | Short username or wrong password | Use the full email address with the authorization code, not your website login password. |
| Cannot send on port 25 | ISP blocks the default SMTP port | Switch outgoing to 465 with SSL. |
| Client cannot connect at all | Service is still off | Turn on the IMAP or POP service in webmail, then set the client up. 139 keeps it off until you switch it on. |
| Password keeps being rejected | Login password used, not the code | A mail app wants the authorization code from the service page, not your website login password. Generate a fresh code and paste it in. |
| Cannot connect to server | Wrong port or encryption | Set 993 with SSL incoming and 465 with SSL outgoing. A firewall on your own machine can block it as well. |
| Repeated password prompt | Short username or a typo | Clear the saved login, then put in the full address with the mailbox password. |
| Messages stuck in Outbox | SMTP authentication is off | Enable "outgoing server requires authentication" with the same login as incoming mail. |
| Recipients can see my phone number | Sending as the number address | Set an alias in webmail and pick it as the sender. The recipient then sees example@139.com. See Hide Your Number. |
| The alias I want is taken | One alias that is already in use | 139 allows one alias per mailbox and suggests a free one if yours is taken. Pick a suggestion or try another word. |
Reader Reported Fixes
Copy from Set Up Mail Client. When a manual setup will not connect, the 139 settings page lists imap.139.com, pop.139.com and smtp.139.com with the ports for that mailbox. Pasting those in clears the guesswork behind most failed setups.
Test the login in webmail first. Sign in at websmtp.139.com with the full address and mailbox password. If webmail works, the credentials are right and the issue sits in the app settings.
Use an Alias So No One Sees Your Number#
Because a 139 address is your phone number, every message you send hands your number to the person who gets it. 139 fixes this with an alias, a word address such as example@139.com that you send as instead. The recipient sees the alias, not your number.
You pick the alias in webmail at mail.10086.cn, under the account and security settings, then add an alias account. If the one you want is taken, 139 suggests another. The alias and your number share the same mailbox, so mail sent to either lands in one place. Your number address keeps working. When you write a message, choose the alias as the sender so your number stays private.
The alias is more than a mask. It can sign in to the mailbox, so you can put example@139.com in a mail app as the username in place of the number. 139 allows one alias per mailbox. It stays with you even if you change your mobile number later. That makes it a steady address to hand out while the number behind it can change.
| Question | Answer |
|---|---|
| What does the recipient see? | Your alias, such as example@139.com, not your number |
| Does my number still get mail? | Yes. Both addresses reach the one mailbox |
| How many aliases? | One per mailbox |
Moving Mail In or Out?#
139 Mail mail speaks plain IMAP, so a mailbox moves in or out like any 139 account. Each folder stays on the server until the move finishes.
Take a copy first. Back up the mailbox before a move. A note that arrives mid switch can sit on either side. A copy keeps you safe.
Carrying mail across? The Univik Email Migration Tool moves each folder over an IMAP link. Give it the 139 Mail server name and mailbox password on this side and the other account opposite.
Rather hand it off? Our Email Migration Services team runs the whole move and verifies each folder arrived.
Use These Settings in Univik Email Backup#
The same IMAP settings above let you download your complete 139 Mail mailbox to your computer. Univik Email Backup saves everything as PST, MBOX, EML or PDF files you keep forever, even if the account closes.
- Download Univik Email Backup and install it on Windows.
- Select 139 Mail from the source list. If it isn't listed by name, choose IMAP.
- Give the complete email address with your mailbox password. The login name is always the whole email address.
- When the backup tool wants server details, hand it smtp.139.com on port 993 with SSL for 139 Mail. Take those values straight from the IMAP table above, with port
993over SSL. - Pick a saving format and folder, then start the backup. Large mailboxes download in the background.
Univik Tools That Use These Settings#
Many people land here while migrating or archiving a mailbox. All 3 tools use the same IMAP settings from this page:
Email Backup
Download your complete 139 Mail mailbox to PST, MBOX, EML or PDF before switching or closing the account.
Email Backup Tool →
Email Migration Tool
Copy every folder from 139 Mail straight into Gmail, Microsoft 365 or any other account. No manual export needed.
Email Migration Tool →
Email Converter Tool
Already have MBOX, EML or OST files from an old export? Convert them to PST, PDF or any format your new app opens.
Email Converter Tool →Prefer to hand the whole migration to experts?
If the hostnames and passwords feel like busywork, you can let the tool handle it. Univik's migration team handles the complete project: planning, transfer, verification and a report showing every folder made it. Since 2013, for single mailboxes up to full company moves.
Email Settings Glossary#
IMAP
Internet Message Access Protocol. Reads mail kept on imap.139.com so every device shows the same inbox, port 993 with SSL.
POP
Post Office Protocol. Downloads mail from pop.139.com to one device, port 995 with SSL.
SMTP
Simple Mail Transfer Protocol. Sends your outgoing mail on smtp.139.com, port 465 with SSL and authentication on.
imap.139.com
The incoming server for 139 Mail over IMAP, on port 993 with SSL. The imap.10086.cn name works the same way.
pop.139.com
The incoming server for 139 Mail over POP, on port 995 with SSL. The pop.10086.cn name works the same way.
smtp.139.com
The outgoing server for 139 Mail, on port 465 with SSL and authentication. The smtp.10086.cn name works the same way.
Authorization Code
The password a mail app uses on 139 Mail. You get it when you turn on the service. Your website login password does not work in an app.
Service Switch
The IMAP, POP and SMTP service is off by default. Turn it on in webmail before a client can connect.
Mobile Number Address
Your 139 address is your China Mobile number plus 139.com, such as 13800138000@139.com. Type it in full.
10086.cn Servers
139 Mail answers on a second set of names, imap/pop/smtp.10086.cn. They point to the same mailbox.
SSL
Encryption for the connection. Keep SSL on for reading on 993 or 995 and for sending on 465.
139 Mail
The free mail service from China Mobile. Every China Mobile number has a 139 mailbox at mail.10086.cn.
Email Alias
A word address such as example@139.com that you set on 139 Mail. Send as the alias and the recipient sees it in place of your number.
Sender Address
The address a recipient sees on your mail. Pick the alias as the sender so your mobile number stays private. Your number still receives.
One Alias
139 Mail allows one alias per mailbox. It can sign in like your number and shares the same inbox. It stays with you if your number changes.
How We Verify These Settings#
Univik builds email backup, migration and converter software since 2013. Our tools sign in to 139 Mail over IMAP and SMTP every day for thousands of users, so a changed server, port or login rule shows up in our connection logs before most guides notice it.
Every value on this page is confirmed with three checks: a live IMAP and SMTP connection from Univik Email Backup, a comparison against the 139 Mail guides and a sign in with a real mailbox using the full address. We re verify after any provider announcement and at least once a quarter.
Found something that no longer matches what 139 Mail shows you? Tell us and we will retest and update the page, with the change logged in what changed recently.
Help & Support
Frequently Asked Questions
IMAP is imap.139.com on 993 with SSL and POP is pop.139.com on 995 with SSL. Sending is smtp.139.com on 465 with SSL. The username is your mobile number and 139.com. The password is the authorization code.
A mail app wants the authorization code from the service page, not your website login password. Turn the service on and generate a code, then paste that in as the password.
The IMAP, POP and SMTP service is off by default on 139 Mail. Open webmail, turn on the IMAP or POP service, then set the client up with the authorization code.
POP downloads to one device on pop.139.com. IMAP keeps mail on imap.139.com so a phone and a computer show the same inbox. Pick IMAP for more than one device.
Yes. The same hosts and ports on every device, all with SSL. Only the menus differ between apps. You still need the authorization code.
Yes. Keep SSL on for reading and sending so the sign in never travels in the open. Set the outgoing server to require authentication.
Your China Mobile number followed by 139.com, such as 13800138000@139.com. Use the same address on reading and sending. The 10086.cn servers take the same address.
Sign in at mail.10086.cn with your mobile number and a text-message code or your login password. The webmail reads the mailbox without a client.
A migration tool copies mail over IMAP from imap.139.com, so turn the service on and use the authorization code. Otherwise download over POP first, then import to the other account.
Set an alias in webmail at mail.10086.cn under account and security, then choose the alias as the sender when you write. The recipient sees a word address such as example@139.com in place of your number. You get one alias. Your number keeps receiving mail.
Other Email Provider Settings
Summary: 139 Mail Settings at a Glance
- IMAP: smtp.139.com, port 993, SSL/TLS
- POP3: smtp.139.com, port 995, SSL/TLS
- SMTP: smtp.139.com, port 465 with SSL
- Username is always your full email address
- 139 mailbox on imap.139.com
- Pick IMAP for phone + computer sync
- Full address as the username
- Username is always the full email address