from:meto search for messages only created by the current user.
from:user.nameto search for messages created by a specific user. The username entered must be the format without spaces (i.e., "john.doe" and not "John Doe.") Search for any mentions of a user by searching for their username.
has:starreturns messages that are starred by the current user.
has:pinreturns messages that pin in the current channel.
has:linkreturns messages that contain a link.
has:mapreturns messages that have a location attached.
on:dd/mm/yyyyreturn message that was created before, after, or on the provided date.
dd.mm.yyyycan be used instead of slashes.
order:ascendingsorts messages by ascending timestamp.
order:descendingsorts messages by descending timestamp.
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