off-topic - assunto thunderbird

Bom dia;

Faz algum tempo que o meu Mozilla Thunderbird não apresenta as mensagens 
o campo assunto, existe algum lugar para ele ser ativado/desativado?

lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.