I think you have to have a loose grasp on many concepts to even ask this question.
Do Post Offices use more energy than an email server? Do bicycle messengers sweat more than fax machines?
In the USA, Post Offices are being closed in favor of parcel services. Many towns don't have them anymore. Besides, you can't email Grandma's cookies, but you can email and sign a contract. I didn't know bicycle messengers could deliver messages overseas, or was that a strawman?