duly noted
Duly noted (phrase) means used to confirm that a comment, request or objection has been heard and properly recorded. Example: “Your objection is duly noted and will appear in the minutes.”
How to use duly noted
Learner’s notesIn plain EnglishIt means "I have heard that and written it down".
Originally the formal language of minutes and legal records, where duly means "in the proper manner". In speech and email it is often dry or faintly sarcastic, so it can sound dismissive to someone expecting warmth.
If you genuinely want to sound receptive, add what you will do next, as in "Duly noted, I'll change the slide."
Fill the gap
Can you complete this real example?
Your objection is _____ and will appear in the minutes.