Microsoft chief executive Steve Ballmer used his keynote address at last week's 3GSM World Congress to unveil Microsoft's new push e-mail service, Direct Push, which is set to challenge Research in Motion's established Blackberry push e-mail system.
Microsoft has teamed up with mobile operator Vodafone to offer the service, which will run on Windows Mobile 5.0-powered devices.
Windows Mobile-based smartphones that will run the new e-mail system include HP's iPAQ hw690 Mobile Messenger and the FS Pocket Loox from Fujitsu Siemens.
The trade show also saw HTC unveil a range of Windows Mobile-based devices that are Direct Push-enabled and will be available globally to T-Mobile and other operators within two months.
Microsoft's push e-mail service will be available from Vodafone from next month, but Newham Borough Council will start using Windows Mobile 5.0 devices this week, having negotiated a deal with Microsoft that sidesteps the need for direct involvement from a mobile network.