[imp] INBOX not translated

[Javier Molina]

I am setting up imp on FreeBSD 4.6. If I choose the Spanish translation,
all messages seem to be correctly translated except for "INBOX". I 
reviewed the translation file and added a translation as follows:

msgid "INBOX"
msgstr "Bandeja de entrada"

then recompiled the translation with make install. However, the text
"INBOX" still appears as the current folder. How do I translate this?

Thank you in advance.