mail (local mail)

["Xavier J. B. L." <xan2@telefonica.net>]

Recently I drop exim4 packages (# apt-get remove exim4 exim4-base exim4-config exim4-daemon-light) and so it removes "at" and "bsd-mailx".

Now I haven't mail (because it drops me bsd-mailx).
But I want having mail for simply:
    - read /var/mail
    - when I login, shell says me "you have a mail" and I can run "mail" 
or similar program
    - I can send local mails (from xan@localhost to root@localhost, etc.)

What program fits into my needs (without reinstalling exim4, postfix or  
equivalents)?. Or I have to install mail server?
Does anyone know it?

I putting this question in arm list and it says me that I have to post here.


Thanks a lotm
Xan.