LouisGac wrote: well, the reason why your code doesn't work is because LimeSurvey doesn't strictly respect the Yii way of doing,

Bava stated, that his code is working when accessing it via URL.

"by entering url like www.xyz.com/controller/action is working fine."

Only when trying to execute it via a cronjob the script isn't working.
But since the threadstarter is no longer commenting, I'm out.

Some well tested cronjob scripts for sending email invitations and email reminders are available at the Limesurvey Template Shop .