from:name or creator:name finds all waves created by name
with:name or participant:name finds all waves where name is a direct participant (name may be a user or a group)
by:name or contributor:name finds all waves where name editted at least one message
to:name Finds all waves where name is a participant, but not the creator.
onlyto:name Finds all waves where name is the only participant, beside the creator.
onlyby:name Finds all waves where name is the only contributor.
onlywith:name Finds all waves where name is the only participant (name is either your own, or a group you belong to).
dfrom:name Finds all waves with a direct message from nameor waves with only two participants, where nameis a contributor.
dto:name Finds all direct messages to name, or waves with only two participants, where the other participant is also a contributor.
is:note Finds all waves in which you are the only participant.
Note: The keyword me can be used with all of the above operators to search for yourself.
is:read Finds all messages within a wave (including all private replies) that have been read.
is:unread Finds all waves with at least one message that has not been read.
is:filed Searches over waves that have been filed into one of your folders.
is:unfiled Searches over waves that have not been filed (and are either still in:inbox or only in:all )
is:muted Searches over all waves that have been muted.
is:unmuted Searches over all waves that have not been muted.
has:attachment Finds all messages with an attachment.
has:document Finds all messages with a document attached.
has:image Finds all messages with an image attached.
caption:term Finds all messages containing a picture, whose caption is the term on which you are searching.
has:gadget Finds all waves containing any gadget.
has:tag Finds all waves with any tag.
tag:name Finds all waves with the tag name.
title:term Finds all waves with term in the title.