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Microsoft 365 Mail
Microsoft 365 Mail is a central email service for all staff members.
Available to
Staff
Service Charge and Application
Staff: Free; no application required
Project / Department: Apply the service through project / department account application
Access to Service
CUHK Microsoft 365 Portal: http://www.cuhk.edu.hk/o365
Login ID: Your email address alias@cuhk.edu.hk
Password: OnePass Password
Service Availability
24 X 7 ; except maintenance period
Email Address:
- Default email address:
- Staff – standard staff email address
- Department / Project – computing-ID@cuhk.edu.hk
- Can be changed at https://cai.itsc.cuhk.edu.hk/alias/
- User Guide –
Mailbox Size:
- Staff: 50 / 100GB
- Department / Project: 50GB
User Profile: You can update your profile information like contact phone, title, address and display name at Update Microsoft 365 Staff Profile
Size Restriction on each Message (including attachments): 25MB
Mailbox Valid until: 1 working day after staff appointment end date / project account expiry date
Here are quick guides for you to check emails or access your mailbox across devices and other email services.
| Clients / Usage | DUO 2FA Enabled Users |
| Web Browser (http://www.cuhk.edu.hk/o365) | Outlook on the web Change Display Language / Time Zone Auto-forwarding Emails to Your Personal Mailbox |
| Windows | Outlook |
| MacOS | Outlook for Mac Native Mail Client (MacOS 10.14 or above) |
| iOS | Outlook App (iOS 12 or above) Native Mail Client (iOS 12 or above) |
| Android | Outlook App (Android 8 or above) |
Questions below have been frequently asked:
- Mail Size, Receiving/Sending Limit and General settings?
- Mail Folders, Suspected Mail Lost and Blocked attachments in Outlook?
- Forwarding and Auto-Reply settings?
- …And more
Please click here for the full version of FAQs.
