text: email_pattern = "[a-zA-Z0-9\+\.\_\%\-\+]{1,256}"+\
        "\\@"+\
        "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}"+\
        "("+\
        "\\."+\
        "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}"+\
        ")+"
  
  def email_es_valido(email):
      import re
      if re.match(email_pattern, email):
          return True
      return False