I wasn't able to find any information about it in the mail area. I clicked on the hlpe button, and they want $19.95 for me to submit the question!
Thanks!

I am sorry it took me so long to answer this... but I don't really know the answer. I recently started my own mamamail account, and have received nothing but spam in it, so I can understand your wish to close the account. I couldn't find any way to do so, either. However, you could set your preferences so that you do not get email notification of there being any new mail there, and log out, and just never log in again. Would that be a viable option for you?