I need to know where I could find out what functions of php the limeSurvey use to send email.

Did you read this?
www.limesurvey.org/manual/Global_setting...settingsail_settings


Or what else would you like to know?
Joffm

Thanks a lot, Joffm.
my ask came from my hostting because in my limesurvey installation emails doesn't arrive at destination. Depending on the global setting, indeed. I will pass this information for them in order to troubleshooting the problem. I hope.
Only one question if you might help me.
The fact of my hostting have not PHP IMAP and PHP LDAP are not impeding my limeSurvey to work very well if I won't use returns and LDAP access ... it do ?

github.com/LimeSurvey/LimeSurvey/blob/ma...mon_helper.php#L2649