Almost half a million subscribers to the Sun's ISP, Bun.com, could have to change their email addresses following the sale of the service today.
News International has sold the year-old service to World Online and said it plans to concentrate on other ecommerce ventures such as the Sun's new portal, Page3.com.
Bun.com's 450,000 customers will be transferrd to World Online's service. The company said the Bun.com branding and email addresses "would remain the same for the time being until a further decision is reached."
A spokeswoman initially said the transition would occur within three months, but later said this had been a mistake and no time period had been specified.
World Online said Bun.com customers would now gain access to extra services including exclusive content and pan-European services.
Alisdair MacLeod, managing director of News International's media company News Network, said: "News International will focus all of its internet efforts on the areas where the company has the best opportunities for creating long-term value."
This means concentrating efforts around the strong brands of News International's newspapers. Page3.com claims to have signed up 100,000 registered users in its first six weeks and one million page impressions a day.
In January, Netherlands-based World Online bought Telinco, the company that provides the infrastructure for Bun.com. A World Online spokeswoman was unable to confirm whether or not Telinco's 400,000 customers will also have to change their email addresses.
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