(Assuming you already have an internet fax service subscription) You can easily send fax from your N900 device by:
1. Make sure you have the document to send on your N900 (JPEG ,Doc, XLS, PDF, etc.)
2. Log-in to your service online account or to your email account.
3. Compose a new email message.
4. Fill-up the recipient's information (fax number, etc.)
5. Attach the document to fax.
6. Click the send button.