The agency is tasked with engaging email recipients who are "nuts" enough to take part in one of a selection of its many fundraising challenges for 2005.
Creative material by Academy Design will be used for an email and a series of landing pages to convince people to take part in fundraising initiatives, including the Three Peaks challenge.
Bertrand Bosredon, online manager at The British Heart Foundation, said: "The creative will make a direct appeal to those looking for a challenge that will test their humour as much as their stamina.
"I know Squeeze will successfully translate this proposition to the digital sphere and am convinced our many challenges will be hugely successful as a result."
The objective for the email campaign is to generate at least 1,200 email requests for more information about the British Heart Foundation's various challenges.
Nik Margolis, managing director of Squeeze Digital, said: "By incorporating email within the 'nuts' campaign the British Heart Foundation is engaging with the most interactive and responsive of audiences."
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