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4 July 1996: Hotmail declares independence from your ISP

Hotmail launched on Independence Day, offering free email you could read from any web browser. Every message it sent carried a small invitation to sign up, an early and very effective piece of viral marketing. Users piled in by the millions, and Microsoft bought the company the following year for a price widely reported at around $400 million. Free, simple and spreading by itself turned out to be a powerful business model.

The lesson: When customers do your marketing for you, growth can be astonishingly cheap and astonishingly fast.

What it meant for investors

$1,000 in Microsoft at the start of 2000 → $12,000 today, vs $4,626 in the S&P 500.

We start the clock at the start of 2000, the first year in our price data after the event. That is 12.0 times the money, and $7,374 more than a plain index fund made over the same years.

What Microsoft teaches: A great business bought at a silly price can still deliver a lost decade; Microsoft's profits grew for years while its 2000 valuation slowly deflated.

Bought inPrice thenWorth todayS&P 500 would be
2000$40.00$12,000$4,626
2003$20.00$24,000$7,727
2005$27.00$17,778$5,763

green = beat the S&P 500 · red = lost money

What if you bought Microsoft? Every starting year and the full story →

4 July 1996: Hotmail declares independence from your ISP