How to say "Re: ... ..." in business email?

When we write business emails in English. If we have many points need to say,  we need to write like this : 1. Re: payment of order no. 20180203, .... 2. Re:  the shipment of...,3. Re: ... " , How to say this kind of "Re: ..." in French? Merci.

Thank you Anna, but it should not be "response", it's like "regrading" or "concerning". Merci quand même.

May 21, 2018 9:18 AM
Comments · 1
If the "Re" you mention means "Response" it stays like that also in French. 
May 21, 2018