"Jump off" used by subscriber, reason not requested

Some of our subscribers have unsubscribed and we get the following in an email to the administrator:
“Jump off” used by subscriber, reason not requested"

Why does this only happen on some while others do give a reason?

Is there a way to always request a reason?



Hi Phil,

Put this in your config.php file, and it will ask for a reason…

# if a user should immediately be unsubscribed, when using their personal URL, instead of
# the default way, which will ask them for a reason, set this to 1