USAGE:
http://www.key4communications.com/sugra/public/newsletter/envianewsletter.html?perspective=generatecontent&lang=es&days=semanal Ver contenido en castellano del newsletter semanal
http://www.key4communications.com/sugra/public/newsletter/envianewsletter.html?perspective=generatecontent&lang=en&days=semanal Ver contenido en ingles del newsletter semanal
http://www.key4communications.com/sugra/public/newsletter/envianewsletter.html?perspective=generatecontent&lang=es&days=mensual Ver contenido en castellano del newsletter mensual
http://www.key4communications.com/sugra/public/newsletter/envianewsletter.html?perspective=generatecontent&lang=en&days=mensual Ver contenido en ingles del newsletter mensual