For just looking at titles on the front page, here's a one-liner in Powershell that scrapes every 60 seconds, and emails you:

While ($True) {If ((iwr https://news.ycombinator.com).content.split('", ') | select-string "YourBrand") {Send-MailMessage -from i@i.com -to example@example.com -server MySmtpServer.example.com -subject "YourBrand was mentioned on the front page of HN!"}; Sleep 60}