skip to content

IT Help and Support

University Information Services

You can download the app and find instructions on how to use it at

Connecting to an individual mailbox

When setting up your account, enter your email address in the format [CRSid] and select 'Configure manually'. Then enter the following server settings:

Incoming server

  • Protocol: IMAP
  • Hostname:
  • Port: 993
  • Connection security: SSL/TLS
  • Authentication method: OAuth2 *
  • Username: [CRSid]

Outgoing server

  • Hostname:
  • Port: 587
  • Connection security: STARTTLS
  • Authentication method: OAuth2 *
  • Username: [CRSid]

When authenticating, you'll see the usual Cambridge University screen for your username, password and then multi-factor authentication (MFA). You must ensure that your username on that screen is [CRSid], and that you use your associated password and additional authentication mechanism.

*If you don't see OAuth2 as an option, fill out the other details and leave the Authentication Method as 'Autodetect'. Click the Re-test button and it should then appear as an option in the drop-down list.

Subscribing to folders

If you have existing subfolders set up in Outlook Online you will need to subscribe to these individually to make them visible in Thunderbird:
1. Select File > Subscribe
2. Check the boxes beside the folders you want to read in Thunderbird
3. Click the Subscribe button
4. Click OK
5. Restart Thunderbird
6. The subscribed folders will be downloaded and will appear separate from the main inbox folder

Deleted Items folder

By default Thunderbird will move deleted items to the Trash folder, this will create a new folder in your Exchange Online mailbox as the default for the mailbox is to use the Deleted Items folder. To ensure deleted items go to the same folder you will need to do the following: 
1. Follow the instructions above for subscribing to folders and ensure the 'Deleted Items' folder is ticked. (Restart Thunderbird if you need to tick it)
2. Select Settings> Account Settings
3. Click on Server Settings
4. Under the Server Settings section where it says 'When I delete a message:' click on the drop-down where it says 'Trash on
5. Select the Deleted Items folder

Connecting to a shared mailbox

Use the following settings to connect to a shared mailbox that you have authority to access. In this example, your username is your individual mailbox in the format [CRSid] and the shared mailbox is in the format [mailbox]@[domain]


  • IMAP server:
  • IMAP port: 993
  • IMAP connection security: SSL/TLS
  • IMAP username: [mailbox]@[domain]
  • IMAP authentication method: OAuth2


  • SMTP server:
  • SMTP port: 587
  • SMTP connection security: STARTTLS
  • SMTP username: [CRSid]
  • SMTP authentication method: OAuth2

When authenticating, you'll see the usual Cambridge University screen for your username, password and then multi-factor authentication (MFA). You must ensure that your username on that screen is [CRSid], not [mailbox]@[domain]

UIS Service Desk

Phone padded  Service status line: (01223 7)67999
Website  Sign up for SMS/email status alerts
Website  Read major IT incident reports

UIS bITe-size bulletin

A regular newsletter aimed at the University's IT community, highlighting service and project news from UIS.

Sign up >

Latest news

Jackdaw upgrade on Monday 18 July – other systems will not get updated user data

5 July 2022

Jackdaw, the University’s user information database, will be taken offline between 09:00 and 18:00 on Monday 18 July. Systems taking data from Jackdaw will not receive updates while the upgrade is happening.

Apps Anywhere (Citrix) virtual desktop service closing in September

29 June 2022

As part of our review of managed desktop provision, UIS has decided not to continue providing its Citrix-based 'Apps Anywhere' virtual desktop service. The University’s needs have changed significantly since we purchased Citrix licences 3 years ago. Widespread adoption of laptops and collaboration tools such as Microsoft...

UDN border router upgrades and IPS config changes coming in July

24 June 2022

What's happening The primary router connecting the University Data Network (UDN) to Janet will be replaced with new equipment on Tuesday, 12 July from 07:30. If we encounter problems that can’t be resolved by 08:30, we will back out the replacement and revert to the previous router. In this scenario, we will try again on...