Mistu4u,
Good question. FirstFirst of all, do you mean that you will NOT send one group email to all of the people who requested the materials, but instead send one email to each of them? IfIf so, to my ear, individually sounds fine to show that meaning. Ormeaning; the alternative would be separately. The meaning would also be quite clear by using the phrase you used in your post, to each of you.
I will send the materials via email to each of you.