perlQuestionnaire allows you to choose between two methods of sending email when you wish to use "Email Verification" as a Survey User Restriction. Instead of a Sendmail Path you may choose to use a SMTP Server. If neither of these items is completed, you will not be able to use Email Verification.

The Sendmail Path can be used on Unix based systems when you have access to the sendmail program to send messages. When you run the perlQ installer, perlQ will attempt to look in two common locations (/usr/sbin/sendmail and /usr/lib/sendmail). If not found, you may need to contact your system administrator in order to get the correct path and enter it here.

If you are not on a Unix machine or do not have access to the sendmail machine, please look into using a SMTP Server.