Is reverse email obfuscator from a website possible in any way?

My program do webscrap on a website called www.bizfeira.com. There is many compannies, with their contacts, for example: http://www.bizfeira.com/pt/empresas/vitor-hugo-pais-unipessoal-lda/ if you move to "Contactos", you will see the email, and telephone, but this is with text obfuscator, and I have no idea how to reverse the email or even the telephone (telefone, or telemovel). if anyone know a website with docomentation or know a solucion i would be greatfull. There is the html code:

    <div class="directories-details-col-left">E-mail:</div>
                    <div class="directories-details-col-right"><a href="mailto:Z2VyYWxAbWVkaWdsb2JhbC5wdA==" class="text-obfuscator">Z2VyYWxAbWVkaWdsb2JhbC5wdA==</a></div>