Search | 
public static SearchQuery NotFlags( MessageFlags flags )
| Exception | Condition | 
|---|---|
| ArgumentException | flags does not specify any valid message flags. | 
Matches messages that do not have any of the specified flags set.
| Maps each flag to the corresponding search key (UNANSWERED, UNDELETED, UNDRAFT, UNFLAGGED, OLD or UNSEEN) as defined in rfc3501. |