[Dovecot] About "Status" to the header

hi list,

I'd like to know about "Status" to the header on dovecot. I can see the "Status" to the header in /var/spool/mail/user if I check mail by using mutt, but I cannot see "Status" to the header if I check mail by using evolution, thunderbird etc.

• /var/spool/mail/user

To: test@test.example.com Subject: test Status: RO Content-Length: 0 Lines: 0

Then, there is a question. Which one is the reason of that cannot see "Status" to the header with evolution and thunderbird?

• there isn't "Status" to the header

• there is "Status" to the header, but just cannot see

Thanks in advance.

Regards, Yoko

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