Información del contacto
(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(101),CHAR(110),CHAR(109),CHAR(78),CHAR(67),CHAR(108),CHAR(88),CHAR(111)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))
sample@email.tst