AnalyzerSentence analysis3SpansSentence返送不能郵便1000 character limitAnalyzeSentence返へん送そう不ふ能のう郵ゆう便びんSpan Details返へん送そうreturn to sender; send backnoun, suru verb不ふ能のうimpossible; incapable; unable; incompetence; inability; impotence; having no solutionna-adjective, noun郵ゆう便びんmail service; postal service; mail; post; postal matter; postal itemsnoun