Showing how things might go for the 739 people diagnosed with cancer each day, the presentation illustrates that Macmillan helps in more ways than providing its well-known nurses.
"Cancer journey" was created by Squeeze Digital and is being emailed to the charity's database together with an appeal for further donations.
Kevin Kuklinski, direct marketing officer for Macmillan Cancer Relief, said: "We wanted something interactive that would do more than meet our donation targets. We needed a communication that would raise awareness of the many aspects of Macmillan's work."
The presentation may be featured on Macmillan's website after the two-week email campaign finishes.
The presentation uses photography, text and voiceovers to take recipients through a journey they influence the course of by making various choices.
Ali Zachar, senior account manager at Squeeze Digital, said: "Macmillan had a firm idea of what they wanted, and we used our understanding of digital, particularly rich media, to bring the journey concept to life.
"It also takes a brave client to really push the boundaries -- and we're not talking about changing a font -- we're talking about changing the way Macmillan is perceived by its own supporter base."
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