If the norm in your circle of friends, or your family, is a phone call or text, then it is not rue to thank those people in that way, but i also think it is important to remember that not everyone will have the same 'rules', and if you are not sure, it is generally better to err by sending a handwritten/personal letter/card, ratehr than by being 'too' casual. thinkas it is much less common to send p