mailstat Command Examples in Linux

mailstat command displays mail-arrival statistics. It parses a procmail-generated log file and displays a summary about the messages delivered to all folders (total size, average size, etc.). The log file will be renamed as logfile.old and a new logfile of size 0 will be created.

Below are the common fields from the mailstat command output and their meaning.
1. msgsfr: Shows the number of mail messages received by sendmail from this mailer.
2. msgsto: Shows the number of mail messages sent by sendmail using this mailer.
3. msgsrej: Shows the number of mail messages rejected by sendmail using this mailer.

mailstat Command Examples

1. To see the mail arrival stats:

# mailstat 

2. To keep the log file intact:

# mailstat -k 

3. To merge any errors into one line:

# mailstat -m 

4. To have a long display format:

# mailstat -l 

5. To use the old log file:

# mailstat -o 

6. To have terse display format:

# mailstat -t 

7. To keep silent if no mails:

# mailstat -s