Currently it is not possible to exclude specific email addresses.
As a possible workaround you can search for a specifiic email address and use a semi colon as a seperator which is interpreted as an OR operator.
For example:
user1@domain.com; user2@domain.com; user3@domain.com
This would return all email for user1 OR user2 OR user3.
© ALL RIGHTS RESERVED. Feedback Terms of Use Privacy Cookie Preference Center