Some emails are placed in a "Quarantine" allowing users to release the emails themselves if they are from a trusted source, emails like this will look like this:

If you get these emails to your individual account (e.g. dcarpenter@crst.org.uk) you can follow this guide instead:
Helpdesk : Central Region Schools Trust (crst.org.uk) 

However the quarantined emails are going to a shared mailbox (e.g. finance@, office@ etc) then you will need to do the following:

Quick Actions:

Clicking on the Deliver, Allow List or Block List links will affect the email on the same line.

You will be taken to a login page with the email address pre-filled in for you, click Next:

On the next page click on the "Email a temporary passcode" link:

Head back to your shared mailbox and copy the passcode, paste it in the box above and click Log in:

If you clicked Allow for example, the email will now be released:

View all Quarantined Mail:

If you want to check all quarantined mail, click on the "Message Log" link in the quarantined email and follow the login steps above. Once logged in with a temporary passcode, you will see the following:

From here you can select the emails that have been quarantined and Deliver or add them to your Allow List using the buttons above.

If you have any problems please contact the IT support team.

Email – it@crst.org.uk

Phone – 0121 8177000