Hi, 

Email personalization makes it possible in cases like these:

1) if we want to use only one name, in this case it would be only José, we use $name.p1$

2) if we want to use his surname, in this case it would be Gonzalez, we use $name.p2$

3) if we want to use both, name and surname, in this case it would be José María Gonzalez, we use $name$

In the situation that you mentioned, where we want to use both of the client's names, it is necessary to create a detail in the contact card. We suggest a detail nombre_es José María. Then it will be possible to use this particular detail nombre_es and add it in the email.