Too many emails to

In my smtp provider, I saw that too many emails have been sent to what are these emails meant for and how can I disable them?

Add the following to your config.php file (it’s stored in the config-extended file).

# in order to get some feedback about performance, phpList can send statistics to a central
# email address. To de-activate this set the following value to 1

# this is the email it will be sent to. You can leave the default, or you can set it to send
# to your self. If you use the default you will give me some feedback about performance
# which is useful for me for future developments
# $stats_collection_address = '';