...
After clicking review, you can select a message and then click the Preview button at the top of the page to view the email before you release it
...
Submit incorrectly quarantined emails for review
If a legitimate email has been quarantined, when releasing make sure to select the two items highlighted below:
Submit the message to Microsoft to improve detection (false positive)
Allow emails with similar attributes (URL, sender, etc.)
...
View your quarantined messages
...