To enable Server Side Includes (SSI) on your hosting account, you will need to edit your existing .htaccess file and place the following code in it:
AddType text/html .shtml AddHandler server-parsed .shtml Options Indexes FollowSymLinks Includes
You can edit the content of the .htaccess file via your cPanel > File Manager or via FTP.
To enable SSI for your full web site, place the .htaccess in the root directory of your site. To enable it for just a certain directory, place the .htaccess file only in that particular directory.
If you require further information/assistance on any of the above, please feel free to submit a ticket to our Support Dept. and a member of the team will be happy to help.