Je lui envoye une message vs je l'envoye une message

Question

I can see it has already been explained in this Q&A forum that lui is never changed to l', which is good to know.

My question is, I have seen envoyer in a list of 'verbs without prepositions' on another section of this website. I took that to mean it does not require à after envoyer, is this correct?

Is it because une message is added that it does require an à and therefore it becomes je lui envoye rather than je l'envoye?

I'm not sure how I should know whether envoyer requires le/la/les vs lui/leur?

Cécile Janty-Davies · Accepted Answer

Bonjour Nicole, 
Just to add to Laura's answer, the verb is 
envoyer quelque chose à quelqu'un = to send something to someone
The something would be le/la/les
 The someone would be lui/leur 
I couldn't find 'envoyer' in the lists I created, so maybe I missed it out.
The quiz question in the lesson was -
He sends him a message 
As the something ( a message) is mentioned after the verb, you don't need to worry about it; it is just the someone,  which in this case is the indirect pronoun  'lui'.
Il lui envoie un message
Hope this helps!

Laura K Lawless · Answer

Bonjour,There is no preposition in front of the thing you're sending (so le/la/les).There is a preposition (à) in front of the person you're sending to (so lui/leur).Je l'envoie - I'm sending it.Je lui envoie - I'm sending to him.Je le lui envoie - I'm sending it to him.