The first sentence isn’t bad, although it can be improved. For example, “I did not receive any advance email regarding the meeting.” It might sound strange at first, but “advance email” properly conveys that your expectation was that you would have received prior notice by email. Similar construction can be found in “advance warning”, “advance hype”, “advance build-up”, or “advance notice”, which are commonly used. The meaning of your second sentence can be understood, but the main problem is with the word “that”, which I believe you mean “future meetings”. The best way that I can explain it is the use of “that” works with a singular, static thing or fact. For example, “No one alerted me to fact that we hold department meetings on the first Tuesday of each month. I wish someone had told me _that_ earlier.” This is slightly different from your sentence and your desire to be included in the email notification chain for any future scheduled meetings. So, may I suggest, “Could you please add my name to the email group list so that I will be sure to receive notice of future meetings?”

For instance, I was not aware of having a meeting and I had to represent something between experts...