Cs-cart 3 does not send emails, cart hosted on Godaddy

Small problem with our cs-cart website, need someone to solve problem immediately! Must have cs-cart 3 experience! no milestone! fix the problem then get paid! When trying to contact with the customer We get the message "Error Could not instantiate mail function." and "Error Message could not be sent. Mailer Error: Could not instantiate mail function." we host on Godaddy