A year or more ago, we dropped time zone data from the Silverpop export job because apparently it was causing the job to lag and sometimes time out. Now that the US list is so big, however, we should really start segmenting the US email list by geographic location, and time zone would be the easiest way to do this. Is this field still super costly to provide? Is there a way we could add it back in for our US records only (assuming that might speed things up)?
Alternately, we could add state data to the Silverpop database, but this will be a lot less simple for me to work with.