ClicShopping supports the use of SMTP to send email which is required when sending mail from our servers.
If you are on a server that does not allow the PHP mail() function or you just wish to use SMTP to send mail, this guide will help you through how to set up SMTP with your shopping cart.
First thing to do is log in to go inside you administrative panel, then go to MyStore => Email options and choose "SMTP" as the Transport Method.
Also verify these other settings or fill the empty settings
Email Line Feels: LF
Use MIME EMail when sending email: YES
Verify E-Mail Addresses Through DNS : FALSE
Use MIME HTML When Sending Emails: FALSE
Port SMTP : must be 25 or 594
SMTP Host : SMTP hostssmtp.gmail.com ==> if you want use gmail
SMTP authentication : True
SMTP Password : ===> your email password
SMTP User Name : ===> you email user mame
SMTP Reply To : Email if you want to receive on anoher email
Do you want use the SMTP secured protocol : Choose one method
Do you want the SMTP port : 25 or 597 (depends of your hoster)
Also check the the General Store configuration to see that the Email Address and Email From fields are the same as the outgoing email address you'll be using for the setup.
Note : If you are under linux, it's better to use sendmail.