@FireWalkWithMe,
Even before the advent of E-mail, and when there were typewriters and carbon paper and white-out, I generally typed all my letters as a courtesy to my readers who would otherwise have gotten headaches deciphering my handwriting. The transition to E-mail, then, was easy for me, and I would like to think that I can still express my thoughts as well as by hand or typewriter. One of the added advantages to E-mail (besides being cheap), is that you do not have to wait a week for a reply (Chess by mail is now obsolete), and thus the exchange becomes more like a conversation.
If one learns English and reasonably clear writing, and understands some of the guidance provided by rhetoric, does it make a difference whether a letter is hand-written or E-mailed?