FTSE 100 information services firm Experian is to increase its footprint in Japan by buying an email marketing company. Altovision provides email distribution, marketing consulting and technical support to over 200 medium and large-sized clients.Experian already sees itself as a leader in 'permission-based' email marketing.In the year to June 30th 2011, revenue for Altovision was $6m and gross assets were approximately $5m. Unsurprisingly, the acquisition was funded from existing cash resources.Experian shares were flat in Tuesday morning but have gained 14% since the start of 2012, against a FTSE 100 gain of 6.4%.BS