This first line will convey the message that you are following up on a meeting or a conversation.

A simple and short mail will generate interest in the reader to go through the contents. One of the most important aspect of communication is that the reader should be able to comprehend your message and should feel that they should revert on the same terms. This will also mean that you are highly focused and professional in your approach.

It is usually advisable to use the word “follow-up”. Example: “My mail is a follow-up on that discussion”. Here, you have passed the message that you are following up.

If the meeting or a call is not possible then all you need to ask your client is to “Revert”: “Kindly revert at the earliest with your feedback/assumed price/view”