http://freerepublic.com/focus/f-news/3170845/posts?page=61#61
click on the ways and means committee link and scroll down to page 9 for IRS email policy explanation.
Read it. Her inbox might have been limited, but a backup existed until that limit. There is no way the backup was limited to internal communications. The only way the selective emails (emails to Obama Administration) to have disappeared off of the IRS server / backup is willful malfeasance.
The committee is asking the wrong questions. The archived storage on the computer was limited to Whitehouse communication only? No way.