Motally, a San Francisco-based firm that does mobile website analytics for clients small and large, has made it easy for companies that handle large volumes of mobile website data to move that data around to run analysis on it.

They’ve done this by adding data import and export functions to their existing API, so its easy to transfer billions of transaction records at a time to and from Motally’s servers, automatically, rather than having someone manually upload or download them.

The export functions can spit out up to 10,000 database rows at a time in popular file formats CSV, JSON, or XML. The import functions are designed for companies that provide extra-large “white label” services to multiple websites. (Yes I know, 10,000 rows isn’t very many to a serious database developer, but that’s 10,000 rows per API call. The size of the database is theoretically unlimited.) The APIs can be integrated with existing systems such as Omniture.

“We are seeing a strong demand for this kind of capability,” Motally CTO Duc Haba wrote in a press release that will go out today.

“Motally provides clients flexibility, and control over their data,” Motally marketing director Sharon Lin added in a phone interview.

To prove it, she said, the company is working out deals with paying clients on a case-by-case basis, rather than trying to implement a rigid pricing plan for all customers. Most of Motally’s API customers will be bigger companies that operate at the enterprise scale, rather than independent websites.

For example, imagine a company that handles mobile websites for dozens of e-tailers or dozens of mobile content publishers. This company is unknown to consumers, yet it handles billions of Web transactions per day. Motally can accept that amount of data — two billion records? no problem! — to provide details on what’s drawing customers, what’s popular or not, and what are the dreaded “exit pages” that send customers away.

Motally itself is providing the service white-label style. Clients, who’ll be companies that serve large numbers of very busy mobile sites, will appear to be providing the traffic analysis themselves, when it truth it’ll be done by Motally. Those clients can then offer the analysis as part of their own branded services.

Motally was founded in early 2009, and received an undisclosed amount of Series A funding from Blue Run Ventures and super-angel Ron Conway.