German phrase
Bitte informieren Sie mich, wenn ~.
Meaning
Please inform me when ___
When to use it
It asks to be informed. It is a polite formal request.
Example dialogue
Bitte informieren Sie mich, wenn Sie das Paket erhalten haben.
Please inform me when you have received the package.
Ja, ich melde mich, sobald ich es erhalten habe.
Yes, I will contact you as soon as I have received it.