Canon MG6400 series Online Manual page 120

The confirmation screen asking you if you continue scanning is displayed after scanning is
complete.
If you continue scanning, load the original on the platen glass and start scanning.
If you do not continue scanning, press the left Function button. The scanned data is forwarded to
the computer and attached to an e-mail.
Scanned data is forwarded to the computer and attached to an e-mail according to the settings specified
in Canon IJ Scan Utility.
For the settings or how to send an e-mail, refer to the mail software's instruction manual.
Remove the original on the platen glass after scanning is complete.
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