Nokia :: Email Address From Address Book On E72 And Removing Old Emails

I like my E72 but I have two problems that really annoy me.

1. In the past when ever I would write a new email I would get list of suggested email addresses in the "To" field. For example, if I would was to write the letter S I would get the email address of the people in my address book whose name starts with an S (sam, Sofia etc). for some reason this feature stopped working on my phone and I can't find how to make it work again. if I want to send an email I need to manually write the email address in the "To" field. The auto suggestion feature works perfectly on my wife's phone (an E72 with the same firmware - 22.007) but on my phone it won't suggest email addresses from my contacts.

2. Another problem is that my Gmail that is synced to the phone, through the Nokia Messenger server is locked on "hide emails older than 2 weeks". Now, I have hundreds of emails stored on my phone that dates to February 1st - the day I got the Phone.

Is there a way to delete these emails automatically, without deleting them on the Gmail account itself? It makes my phone really when going through the emails.