In $2024,$ you have set a New Year$$s Resolution to be better at e$-$mail management. You receive an average of $30$ e$-$mails each day to your inbox. After you read $($and respond, if necessary$)$ to an email, you either delete it or move it to a folder for future reference. You want to be reading $($and responding, if necessary$)$ to e$-$mails so that each e$-$mail is spending no more than $20$ hours in your inbox. What is the maximum number of e$-$mails that can be in your inbox, on average, to be able to meet this goal?