I have a Hotmail account which I access through the mail app on my Desire and there is a setting which allows me to limit how many e-mails are downloaded to my phone at any one time (I have it set to 3 days so I dont have my entire inbox on my phone taking up space) but my wife has a Gmail account and I cant see the same option anywhere in the Gmail app!?!?! 
Is there any sort of option which will do a similar thing on the Gmail app as she has hundreds of emails sat in her Gmail inbox which I can only imagine are taking up loads of unecessary space!!
Thanks.......

Is there any sort of option which will do a similar thing on the Gmail app as she has hundreds of emails sat in her Gmail inbox which I can only imagine are taking up loads of unecessary space!!
Thanks.......