Expressions in order to close an informal letter

Con cariño,


Con amor, (if it is your best friend or a good friend)

Un abrazo, (if it is an informal relation, but if  it is a close friend it is  a little bit cold)

Te quiere, (if it is a friend or boyfriend or girlfriend)

Saludos, (if it is your coworker or an adult your are talking about that you don’t know that much)

Te extraña,

And after these you write your name like

Te extraña,