Japanese phrase
念のためお知らせします。 nen no ta me o shi ra se shi ma su
Meaning
I thought I should let you know just in case.
When to use it
Politely shares a detail that may otherwise be missed. The wording sounds considerate and mildly cautious rather than urgent or forceful.
Example dialogue
念のためお知らせします。来週は工事があります。 nen no ta me o shi ra se shi ma su rai shū wa kō ji ga a ri ma su
I thought I should let you know, just in case. There will be construction work next week.
そうなんですね。気をつけます。 sō na n de su ne ki o tsu ke ma su
Oh, I see. I'll be careful.