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 (CWEM) Password

Service Availability

24 X 7 ; except maintenance period

1. Mailbox & Email Address

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: 50 – 100GB
Size Restriction on each Message (including attachments): 25MB
Mailbox Valid until: 1 working day after staff appointment end date / project account expiry date

2. Using Microsoft 365 Mail via Your Device

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 Web Access (OWA) Change Display Language / Time Zone Auto-forwarding Emails to Your Personal Mailbox
Windows	Outlook 2016
MacOS	Outlook 2016 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)

3. FAQs

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.