The Advanced search features opens separate mini-panes to perform different types of searches. You can open multiple instances of each mini-pane. You might want to do this if you are doing AND type searches.
Advanced search allows you to search by the following criteria:
Attachment. No Attachment, Any Attachment, or Specific Attachment. If you select specific attachment, a list of attachment types is displayed.
Basic. Uses header information such as From, To, Subject, and Content of the email body.
Date. Search for messages received after, on, or before a selected date. Open two Date panes to search between dates.
Domain. Search for messages where the address headers (From/To/Cc) contain addresses from certain domains. The domains are pre-defined with check boxes.
Folder. Limit search to selected folders only.
Saved Search. Open a search query you have saved previously.
Size. Search for messages that are larger or smaller than a specified size (bytes, KB, or MB).
Zimlets. Search for messages or contacts containing URLs, phone numbers, or other objects as defined by ETC.
Status. Search for messages or contacts that are flagged or unflagged. Search for messages that are read, unread, forwarded, or replied to.
Tag. Search for messages or contacts that have a specific tag or a specified set of tags.
Time. Search for messages that arrived within a time-frame, such as the last hour, this week, last month, etc.