Following Gmail's iOS app debacle yesterday, Sparrow confirmed that it was working on an iPhone app that will land in the coming months. The company's Mac app has proven a popular alternative to Apple's stock Mail.app with Facebook integration, support for a variety of email services, full Gmail label support, and built-in Growl notifications, and we've heard hints for months now that the company was working on jumping to iOS. We reached out to the team yesterday, and just got an early teaser of the app running on an iPhone, and while details are slim, we've gotten confirmation that the app will have profile images, multiple inbox support, and full label integration. Sparrow co-founder Dom Leca told us, "We want to go through and treat the mail flow as fast as possible in the most elegant and pleasurable manner."