One of the biggest holes in the iPhone right now is the lack of support for corporate e-mail. I know there are a lot of execs/corporate types out there that are going to chase after this phone in the next few weeks; and without the ability to get work e-mail, carrying the iPhone is going to be a problem for them.
"Visto Announces Secure Corporate Email for Apple iPhone
iPhone Can Now Support Corporate Users on Microsoft Exchange and IBM Lotus Domino
Redwood City, Calif., June 28, 2007 -Visto, the leading provider of mobile email solutions for business users, today announced the support of corporate email functionality for the Apple iPhone.
Through Visto, iPhone users will be able to experience secure mobile access to current and legacy versions of both Microsoft Exchange and IBM Lotus Domino corporate messaging platforms. Visto will enable access that is easy to implement and administer and will alleviate IT concerns regarding security and reliability."
The full press release can be seen here.