German phrase
Darf ich Sie an ~ erinnern?
Meaning
May I remind you of ___?
When to use it
You politely offer a reminder. Use it before a meeting or appointment.
Example dialogue
Darf ich Sie an unser Treffen um 15 Uhr erinnern?
May I remind you of our meeting at 3 pm?
Ja, bitte, das wäre sehr hilfreich.
Yes, please, that would be very helpful.