Using Email to Correspond with a Taxpayer

[Arnold Finkelstein]

I have purchased a deed, and I am engaged in an email correspondence with a the taxpayer about next steps.  I have been told that this doesn't count (my words), legally, according to Alabama state law.

If the result of this correspondence is a Quitclaim Deed (or other outcome), is that outcome compromised in some way because we used email to get to it, even if the outcome is properly executed and, itself, legal?   For example, can a taxpayer later challenge his legal Quitclaim to me because discussions leading up to it took place in email, instead of Certified Mail?