Q: I need to reinstall my email application on a MacBook Pro with MAC OS X 10.6.8 but have no installation disk

Unless you have a backup, or know someone with another 10.6.8 Mac : you can't.

Contact Apple support and buy the Installation disc for Snow Leopard.

Purchase OS X 10.6 Snow Leopard here.

http://store.apple.com/us/product/MC573Z/A/mac-os-x-106-snow-leopard

Depending on his Mac, that may not work. If that. Mac shipped with a version later than 10.6.3, then the retail version will not work.

Contact Apple and order replacement disks from them. They will provide the correct disks for that Mac.

Good point!