Removing duplicated messages from mailboxes

[Jose Romildo Malaquias]

Hello.

Is there an easy (and efficient) way of removing duplicated messages from
my mailboxes (keeping only one copy  of them)? Note that I am talking
about old messages already saved in the mailboxes, not the new messages
being delivered now to the mailboxes.

Thanks.

Romildo
-- 
Prof. José Romildo Malaquias <[EMAIL PROTECTED]>
Departamento de Computação
Universidade Federal de Ouro Preto
Brasil