[Evolution] different columns in two folders

[Nikos Almpanopoulos <nikos almpanopoulos gmail com>]

Hello,

In my Inbox, I need only one column, sender of the mail ("from"). 
Obviously all mails are directed to me.

In my Sent mail, again I need only one column, recipient ("to"). 
Obviously all mails are sent by me.

Problem is, when I delete "to" from Inbox, it's also removed from Sent 
Mail (and when I remove "from" from Sent Mail it's removed from Inbox).

Any solution?

Thanks,

Nikos