It didn't work for me, 

I did:
apt-get install language-pack-es-base
apt-get install php-gettext

at /usr/share/squirrelmail/functions/i18n.php I added:

$languages['es_ES']['NAME'] = 'Spanish';
$languages['es_ES']['CHARSET'] = 'utf-8';
$languages['es_ES']['LOCALE'] = array('es_ES.UTF-8', 'es_ES.UTF8');


$languages['ca_ES']['NAME'] = 'Catalan';
$languages['ca_ES']['CHARSET'] = 'utf-8';
$languages['ca_ES']['LOCALE'] = array('ca_ES.UTF-8', 'ca_ES.UTF8');

and I did squirrelmail-configure (Languages -> Charset utf-8

There was no improvemet, on the contrary, all that was well diplayed turned like this:

so I turned my configuration back (at any other web on the same server everything goes

Thanks for your help, I hope you have some more ideas

Do you have the language package installed in the SquirrelMail server? For example: language-pack-es-base And the package php-gettext ? In Ubuntu 10.10 I needed to add all the affected languages in this file: /usr/share/squirrelmail/functions/i18n.php For example: Catalan (ca_ES.UTF-8), Spanish (es_ES.UTF-8), English (en_US.UTF-8), Basque (eu_ES.UTF-8), French (fr_FR.UTF-8), Italian (it_IT.UTF-8), Arabic (ar_MA.UTF-8 ar_SA.UTF-8) And made squirrelmail-configure (Languages -> Charset utf-8) > Hi there, I resend this mail because I haven't been able to find a solution. > > The problems arise after upgrading from ubuntu server 12.04 to 12.10: > > All the arriving mails from sender which name has accents or other > likely characters, do not display the sender, same hapens if character > is in subject (subject is not diplayed), eventhough, if the body > contains this kind of characters, these are seen with no problem. > > At my address book all the names containing such characters desappeared, > not the mail field, but only the name one, and it cannot be edited. I > tried editing the "/var/lib/squirrelmail/data/", > but the visualization results in strange characters, I've tried > converting the file from iso-8859-1 to utf8, but nothing... > > Another problem is that when answering, the original massage is erased > if there is an accented character, and messages that are not html, erase > the "lines" where there is a word with accented characters.!!! > > any idea of what could be happening, any help? > > thanks in advance.... > >

            andrés chandía
P No imprima innecesariamente. ¡Cuide el medio ambiente!