1. Introduction of Campus-Wide E-mail System (CWEM)
Owner of student / student organization / staff / department / project account will have a CWEM mailbox assigned.
| Default Email Address |
computing_id@cuhk.edu.hk |
Default Email Dropbox |
computing_id@mailserv.cuhk.edu.hk |
Customizable Email Address |
alias@cuhk.edu.hk@cuhk.edu.hk
(please click here for details about changing email alias) |
With an e-mail account, you can:
- Send and receive email
- Receive most of the official university information
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2. Ways to Access CWEM System
You can simply start using CWEM with,
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3. General Functions
- Send an Auto-reply
- Auto-forward E-mail
- Reading Chinese Characters Properly in CUHK WebMail System
- Moving Emails from Webmail/Server to Outlook 2007/Outlook 2010
- Filter E-mails
- Change E-mail Alias and E-mail Drop Box
- via MyCUHK (personal account)
- via Login Page (departmental/project/student society account)
- Change / Reset Password
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4. CWEM Mailbox Quota
You can check your mailbox quota after logging into CUHK WebMail.

Account Type |
Disk Quota |
Max. Size per Email |
Student/Student Organization/Guest |
150MB |
20MB * |
Staff/Department |
500MB |
When your CWEM quota is nearly full, a warning message will be dispatched to your CWEM mailbox. You must free up disk space by clearing up some of your emails immediately. (Procedural Guide for Outlook Express, Outlook 2007, Mozilla ThunderBird and Windows Live Mail)
When your CWEM quota is full, any further incoming email will be DISCARDED automatically. Such emails will not be forwarded to other email addresses though you had enabled the email forwarding function. You will only receive email again when free disk space is available.?
Request for Additional Quota
You can request for additional CWEM quota here with appropriate reason. For student organizations, please refer to this page for details.
* This 20MB counts everything goes into a message including the content, attachment and email headers. Files usually expand and sometimes add 33% overhead when they are encoded as an attachment. Hence, a simple email with 12-14MB file attachment will almost hit the max size of an email.
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5. Email Account Expiration
For Students
Your email account will be expired on the last day of the month printed on your CU Link card.
All your emails and data files will be deleted automatically. And you are responsible to archive and backup all these information before your account expires. If necessary, you can apply for account extension. Check application details in the “Computing Accounts of Final Year Students” page.
For Staff
Your email account will be expired on the last day of employment or the last day of retirement.
All your emails and data files will be deleted automatically. And you are responsible to archive and backup all these information before your account expires. If necessary, you can apply for account extension. Check application details in the “Account-Staff” page.
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6. Other Related Information
- Services for Departments/Student Organizations
- Account Application
- Mass Mailing Service
- Mailing Lists
- Security
- Security Issues and Alternative Solutions in E-mails
- Apply for Digital Certificate
- Phishing, Spam and Scam
- Spam and E-mail Viruses
- E-mail Fraud Alert: Beware of Phishing
- Email Scams - E-mail Promising Lots of Money
- The Unsolicited Electronic Messages Ordinance
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7. System Information
- Hardware and Software
- Maintenance Schedule
- Campus-wide E-mail System Upgrade 2008
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8. Policies and Guidelines
- Computer Network - Policies and Guidelines on Access and Usage
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