Our company President and I have the Storm. She previously had the 8830. We both keep lots of mail and have many folders under our inboxes. Prior to getting the Storm her Blackberry wiped out all her e-mails in the device, when it reached it's capacity. I contacted BB support and they informed me that's the way it's designed. So my question is how can we know if we are reaching capacity before it deletes the e-mail in the device. Or is the Storm (firmware 4.7) not going to do this?