Fujitsu ScanSnap N1800 Operator's Manual page 323

4. Press the [Scan&Send] button.
When [Scan Viewer] is [On], this will be a [Scan] button.
The scanning starts.
The scanned data is sent by fax immediately after the scanning is completed,
and the LCD touch panel screen returns to the [Main Menu] window.
If the [SMTP Server Authentication] window appears, enter authentication
information needed to access the fax sending server and press the [OK]
button.
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