Messages, Naughty, Num_bh_messages – Google Message Security Batch Reference Guide User Manual
Page 72: Num_bytes

Batch Command and Field Quick Summary
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messages
The messages field holds the total number of messages for the Usage Report.
Syntax and Example:
messages = <number of messages>
messages 11
mmf
The mmf field holds the total number of Get Rich messages for the Spam Report.
Syntax and Example:
mmf= <total number string>
mmf 3
naughty
The naughty field holds the total number of messages triggering the Sexually
Explicit junk email filter for the Spam Report.
Syntax and Example:
naughty= <total number string>
naughty 3
num_bh_messages
The num_bh_messages field holds the total size of blackholed messages for the
Traffic Report.
Syntax and Example:
num_bh_messages= <total number string>
num_bh_messages 3
num_bytes
The num_bytes field holds the total size of messages in bytes for the Traffic
Report.
Syntax and Example:
num_bytes= <total number string>
num_bytes 3