At this time, it is not feasible to re-send lessons. Fortunately, all lessons are available online at the link below. :)
http://www.The-Course-In-Miracles.com/acim-forum
Please make sure the email did not get lost in your spam folders or accidentally deleted. Also be sure to make sure the following email address is on your 'Allowed Senders' list: chris@chriscade.com