[horde] PGP support

[david.barrena at map.es]

Hi, 
 
I have: 
 
Horde: 2.1 
IMP: 3.2.1 
Turba: 1.2 
Kronolith: 1.1 
Passwd: 2.2 
 
And I need PGP support, but I can't see options about PGP in prefs, all are hidden.  
What I need to have PGP support? 
 
Thanks! 

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