Memorial Day is one of the most important U.S. holidays that celebrates fallen soldiers and honors the sacrifices of the military personnel. Besides, it also marks the commencement of summer. This year, Memorial Day falls on 27th of May and it is sure to garner a good number of customers. In view of this trend, it is, of course, an important day for all the email marketers out there. It is an opportunity to entice the customers to splurge and…