The solution combines with iSync to allow members to synchronize information with other devices, including mobile phones, Palm OS PDAs and iPod.
The .Mac Address Book lets users keep multiple email addresses and phone numbers for contacts online, plus home and work addresses and instant messaging names.
The solution integrates another handy feature - the capacity to access up to 50 email addresses with a single click. This lets users compose an email using .Mac Mail online and select up to fifty recipients is a straightforward manner.
The company has also improved the way its Mail application accesses email from other POP mail accounts and made it easier to manage mail online, Apple says.