Mercantile Bank of Michigan is riding the wave of free publicity from being first to market (probably) with iPhone-based P2P payments powered by PayPal. That's a triple play in both alliteration and PR value. See the teaser ad on the bank's website below (first screenshot).

The new service, a joint effort from PayPal and S1, is expected to go live in early 2010. It will allow customers to send money directly from their iPhone to any other individual on the worldwide PayPal network. All the sender must know is the recipient's mobile phone number or email address. According to the five-question FAQ on the landing page (see second screenshot), the service will be available to all MercMobile customers and will be free of charge.

Mercantile Bank has become one of the most innovative banks we follow. Congratulations to CIO John Schulte and his team for leading the industry on several fronts and providing great material for Netbanker (previous posts here; note 1).

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For more on the P2P payments market, see our latest Online Banking Report, published earlier this week, Making the Case for Person-to-Person Payments. 

Mercantile Bank's powered-by-PayPal mobile P2P app (7 Dec. 2009):

Mercantile Bank of Michigan homepage (8 Dec. 2009):
Note: MercMobile P2P Payment teaser in lower left and home-based remote-deposit capture on the top banner.

P2P payments landing page (link)

Note:
1. Mercantile even earns its very own category at Netbanker: <netbanker.com/mercantile_bank_of_mi>.