Show the status of incoming mail
mailstat command is used to display the status of arriving mail.
mailstat(options)(parameters)
-k: Keep the integrity of the email log file and do not clear the log file;
-l: Use long format to display email status;
-m: Merge any error messages into one line for display;
-o: Use old mail log mail;
-t: Use a concise format to display email status;
-s: If there is no mail, no information will be output.
Mail log file: Specify the mail log file to be read.