Formatting issues when unix file is sent to mail - email

Question

I have the following code to write data to a file called logdata.ext in a particular format.
echo "###############################################################################" >> logdata.txt
echo " HEADING GOES HERE " >> logdata.txt
echo "###############################################################################" >> logdata.txt
echo " Server : $NAME Time Stamp : $(date)" >> logdata.txt
echo " Mount Point Disk Space Occupied Action Required " >> logdata.txt
echo "===============================================================================" >> logdata.txt
echo "ROOT_DIR $appl% $app_st" >> logdata.txt
echo "share $app_share% $share_st " >> logdata.txt
echo "/tmp $tmp% $tmp_st" >> logdata.txt
echo "/home $home% $home_st" >> logdata.txt
When I am opening the file using
cat logdata.txt
I am getting the following well formatted output
###############################################################################
HEADING GOES HERE
###############################################################################
Server : 198.168.53.45 Time Stamp : Wed Aug 12 06:41:48 PDT 2015
Mount Point Disk Space Occupied Action Required
===============================================================================
ROOT_DIR 64% No
share 94% Yes
/tmp 8% No
/home 69% No
But I tried sending the file logdata.txt to my email ID using the code
cat "logdata.txt" | mailx -s "Disk Space Warning!" myemail#mydomain.com
But the formatting was not as good as in the file.
I got it in the following format
###############################################################################
HEADING GOES HERE
###############################################################################
Server : 198.168.53.45 Time Stamp : Wed Aug 12 06:28:44 PDT 2015
Mount Point Disk Space Occupied Action Required
===============================================================================
ROOT_DIR 64% No
share 94% Yes
/tmp 8% No
/home 69% No
Why am I getting a different format when I send the file to mail?

Answer 1

In command prompt or any editor program, text is displayed in monospaced/fixed width font, in which each character is of same horizontal width. However most likely, your mail client is using any other font (not monospaced) to display the text.
You can either attach the file with the mail, or use html to format the text.