According to an article on the technology news site Wireless NewsFactor, one analyst has some doubts about whether or not the vaunted new push email technology in BlackBerry rival Windows Mobile 5.0 is really "push" at all.

In fact, Yankee Group analyst John Jackson says that the new push email - formally known as "Mobile Direct Push Technology" - won't cause a power drain on enabled devices.

Jackson tells Wireless NewsFactor's Kimberly Hill that in checking periodically with the server for incoming email, Mobile Direct Push doesn't really do anything different than what PCs do when their email program queries your email server at stipulated intervals.

True email push technology, Jackson says, sends messages to the device without the device taking any action.

Jackson adds that because it consumes more battery power to send a transmission then to receive one, devices such as those that will be enabled with Mobile Direct Push to reach out and communicate with network servers will consume more battery power than RIM-enabled devices - which take the opposite tack and receive communication from the network rather than initiate it.