Product Announcements & Troubleshooting Extended Detection and Response Collaboration Protection

Elements Collaboration Protection marks all mailboxes that have lost the connection to Microsoft as TemporaryFailure
Spam email getting through even if Elements Collaboration Protection is in use
What is "suspicious hidden inbox rules" option on inbox rule scanning feature in Collaboration Protection.
Elements Collaboration Protection: Breach detected time is recorded differently with actual occurred time in portal
What time is the scheduled report generated in Collaboration Protection?
The detection made from an old mail in Elements Collaboration Protection
How can admin recover or release quarantined emails directly preventing the email from being sent to the original recipient?
Can we integrate Microsoft Sentinel (SIEM) with Elements Collaboration Protection?
Why users/recipients who is not aware of the quarantined email is not been notified on Elements Collaboration Protection?
How does Elements Collaboration Protection subscription usage work?

How to release quarantined items on Elements Collaboration Protection?

Issue:

How to releasing quarantined items on Elements Collaboration Protection

Resolution:

To release quarantined items:

1. Select Quarantine on the sidebar.
2. On the Quarantine page, select the items that you want to release from the quarantine.
Note: You can release up to 200 items at a time.
3. At the bottom of the page, select Release. The selected items are gradually released from the quarantine.

Documentation here Releasing quarantined items | Elements Collaboration Protection | Latest | WithSecure User Guides