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 [email protected] -to [email protected] -server MySmtpServer.example.com -subject "YourBrand was mentioned on the front page of HN!"}; Sleep 60}

Does your one-liner continue to send the same email every 60 seconds while "YourBrand" is on the front page?

Yes, you may want to disable it when your brand hits the front page.