Microsoft announced on December 31, 1997 that it had acquired Hotmail, the free web-based email service, and would make it an important part of MSN. Microsoft did not disclose the transaction’s financial terms. A later WIRED retrospective said a registration filing valued the 2,769,148 Microsoft shares exchanged for Hotmail at about $400 million at the time; that is a reported share-value estimate, not an officially announced cash price.
When did Microsoft buy Hotmail?
Microsoft announced the acquisition on December 31, 1997. In the announcement, Hotmail was to continue operating from Sunnyvale, California, as a wholly owned Microsoft subsidiary reporting to Laura Jennings, then a vice president of The Microsoft Network.
Hotmail had launched on July 4, 1996, according to a 1998 WIRED retrospective. By Microsoft’s announcement, the service had more than 9 million members worldwide.
How much did Microsoft pay for Hotmail?
Microsoft’s acquisition announcement explicitly said, “Financial terms of the transaction were not disclosed.” Therefore, there was no official purchase price in the announcement and no basis for describing the deal as a disclosed $400 million cash acquisition.
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A later WIRED account reported that a subsequent S-3 registration showed Microsoft exchanged 2,769,148 of its shares for Hotmail. WIRED said those shares were worth approximately $400 million at the time. That figure is a retrospective valuation of the share consideration, not a price Microsoft publicly announced on December 31, 1997.
Why contemporary reports gave different estimates
An immediate January 1998 WIRED report described conflicting outside estimates because the official terms were undisclosed. Analyst Rob Enderle was cited with a $15 million to $30 million estimate, while higher estimates of $300 million to $400 million were attributed to unnamed analysts cited by The Wall Street Journal. Those ranges were speculation at the time, not verified transaction terms.
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Why did Microsoft buy Hotmail?
Microsoft framed the deal as an MSN strategy. Hotmail gave MSN a large, globally accessible webmail service and strengthened Microsoft’s online communication and information offerings. Laura Jennings said the acquisition “completes a strategy we’ve had for the past nine months to offer the key services that people want on the Internet.”
The service also complemented Microsoft’s existing email products, including Outlook Express, Outlook and Exchange. Microsoft said it wanted to provide consumers with “the best combination of free and premium e-mail services,” pairing Hotmail’s free web access with its broader client and server software portfolio.
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- A free email account accessible from any internet-connected PC.
- A permanent email address that could be used from different locations.
- Access to messages from as many as four POP3 accounts.
- Worldwide reach at a scale Microsoft reported as more than 9 million members.
What happened to Hotmail after Microsoft bought it?
Hotmail remained a Microsoft-operated service within MSN rather than being shut down or folded immediately into a desktop-only product. Microsoft’s January 26, 1999 press release reported more than 30 million members and an average of 150,000 new accounts per day. Those numbers describe Microsoft’s historical report at that date, not current membership or growth.
The acquisition therefore gave MSN a rapidly expanding audience while preserving Hotmail’s web-based identity. Hotmail’s scale also helped Microsoft compete for users and attention in the emerging consumer-internet market, alongside its established Outlook, Outlook Express and Exchange products.
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Key dates and figures
| Item | Figure or date | What it represents |
|---|---|---|
| Hotmail launch | July 4, 1996 | Launch date reported in WIRED’s 1998 retrospective. |
| Microsoft acquisition announcement | December 31, 1997 | Date Microsoft announced it had acquired Hotmail. |
| Members at announcement | More than 9 million | Microsoft-reported worldwide membership in its acquisition announcement. |
| Official deal terms | Not disclosed | Microsoft’s stated position in the December 31, 1997 announcement. |
| Later reported consideration | 2,769,148 Microsoft shares | Share exchange described in WIRED’s retrospective account of a later S-3 registration. |
| Approximate value of those shares | About $400 million | WIRED’s reported value at the time; not an officially disclosed cash price. |
| Members in January 1999 | More than 30 million | Microsoft-reported membership in its January 26, 1999 release. |
| Average new accounts in January 1999 | 150,000 per day | Microsoft-reported average for that period. |
What the acquisition meant for Microsoft
Hotmail supplied MSN with an established consumer service at a moment when email was becoming a primary way people used the internet. Microsoft’s stated plan was not simply to own a popular brand; it was to connect free webmail with MSN’s wider online services and with Microsoft’s paid and enterprise email products.
The financial record is best understood in two layers: Microsoft’s contemporaneous announcement left the terms undisclosed, while later reporting tied the transaction to a large Microsoft-share exchange valued at roughly $400 million at that time. Keeping those descriptions separate avoids turning an estimated historical valuation into an official purchase-price claim.
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