3 ms·http://www.boomeranggmail.com/ http://www.boomeranggmail.com/by kgtm 11y agohttp://www.boomeranggmail.com/ http://www.boomeranggmail.com/zabramow 11y agoDoes that have a tracking device? I had to get rid of sidekick because it was alerting recipients with a red warning inside their emails.kgtm 11y agoNot by default.