In early 2016, some users reported having received e-mails from Academia.edu where they were asked if they would be interested in paying a fee to have their papers recommended by the website's editors. This led some users to start a campaign encouraging users to cancel their Academia.edu accounts.
The main difference between zip code and postal code is that zip code is used as a code in United States while postal code is used in rest of the world. ZIP Code. ZIP code is postal code system that is being used by U.S. Postal Service (USPS) since 1963.
Difference Between ZIP Code and Postal Code. ZIP Code vs Postal Code. Though the advent of SMS and email has adversely affected the business of physical mails, they still constitute a bulk of messages and letters sent and received across the world. In fact email can never substitute a formal letter which has its own sanctity and importance.