The only push mail I have got working so far on the N95 is Roadsync by Dataviz and this syncs ok with any Exchange 2003 + server. http://www.dataviz.com/products/road...s60/index.html
Free trial is available.
Havent had a chance to really test what it does to the battery life.
Its likely that Emoze wil also support the N95 soon,