@subject.setter<EOL><INDENT>def subject(self, value):<DEDENT>
if isinstance(value, Subject):<EOL><INDENT>if value.personalization is not None:<EOL><INDENT>try:<EOL><INDENT>personalization =self._personalizations[value.personalization]<EOL>has_internal_personalization = True<EOL><DEDENT>except IndexError:<EOL><INDENT>personalization = Personalization()<EOL>has_internal_personalization = False<EOL><DEDENT>personalization.subject = value.subject<EOL>if not has_internal_personalization:<EOL><INDENT>self.add_personalization(<EOL>personalization,<EOL>index=value.personalization)<EOL><DEDENT><DEDENT>else:<EOL><INDENT>self._subject = value<EOL><DEDENT><DEDENT>else:<EOL><INDENT>self._subject = Subject(value)<EOL><DEDENT>
The subject of the email(s)

        :param value: The subject of the email(s)
        :type value: Subject, string