Breakdown of Te quiero enviar un paquete.
un
a, an, some
querer
to want; to love (a person)
te
to you / yourself (reflexive) / you (direct object)
enviar
to send
Questions & Answers about Te quiero enviar un paquete.
Why is te at the very beginning of the sentence instead of next to enviar?
When a conjugated verb connects to an infinitive (like quiero enviar), you have two choices for placing the object pronoun. You can put it before the conjugated verb (Te quiero enviar) or attach it directly to the end of the infinitive (Quiero enviarte). Both are perfectly natural and mean the exact same thing!
Is te the direct or indirect object here?
It is an indirect object. The direct object is the thing being acted upon (the package being sent, un paquete). The indirect object is the person receiving that thing (you, te).
If I wanted to say 'I want to send HIM a package', how would this sentence change?
You would swap out te for the third-person indirect object pronoun le. The sentence becomes Le quiero enviar un paquete (or Quiero enviarle un paquete).
Why isn't there a word for 'to' between quiero and enviar?
The verb querer (to want) connects directly to the next verb without needing a connecting word. The 'to' part of 'to send' is already built right into the infinitive form of the verb enviar.