French phrase
Je lui transmettrai ~.
Meaning
I will pass ___ on to him.
When to use it
A promise to pass information on to someone. It is natural in speech and email, with a mildly formal tone.
Example dialogue
Tu as prévenu Paul pour la réunion ?
Did you tell Paul about the meeting?
Je lui transmettrai l'ordre du jour.
I will pass the agenda on to him.