How to prevent emailed cron output

I'm using a cron that gets accesses a URL to run a scheduled process. I keep getting successful emails... is there a way for me to only get emails if the wget request fails?

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wget http://www.domain.com/cron/dailyEmail 2>&1;

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wget --quiet http://www.domain.com/cron/dailyEmail || echo "wget failed"

(Note that an empty response is not a failure.)

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If you're running wget directly in the cron setup, then no. You can't conditionally redirect output. You could, however, put the wget command into a shell script, and do the conditionals there.

#!/bin/sh

OUTPUT=`wget .... 2>1`
if [ $? != 0 ]
   echo $OUTPUT
fi