Hi,
You could insert the 'headers' between each cat
Code:
echo "Server A Logs for the day" >> logfile
echo "=========================" >> logfile
cat logfile1 >> logfile
echo "Server B Logs for the day" >> logfile
echo "=========================" >> logfile
cat logfile2 >> logfile
...
cat logfile3 >> logfile
cat logfile | mailx -s 'Server logs for the day' xxx@xxx.com