eFax and Microsoft Provide Fax Sending and Receiving Through E-mail

Choose your own unique eFax number and hand it out to your business associates. When people send faxes to your eFax number, you'll receive them directly in your e-mail inbox. Also, eFax enables you to send high-quality faxes right from your favorite Microsoft Office programs.

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You can receive faxes for free through their service, but you can try it for free to send 2 faxes, and if you find it useful you can signup for their paid service.