We all use Email but not everybody uses it correctly. Not that I believe that a lot of our readers do not know how to work their Inbox routine, but I do believe that if only 5% of our readers makes these mistakes we could all benefit from them seeing this illustration by Matt from the Oatmeal.
My opinion is that there should be a mandatory test before being allowed usage of any Email account, probably before being allowed to use the web as well.
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