Absolutely. If you are running an HTTP website (say https://smallbiz.com ) you won't be able to run web push notifications natively. However, you can still use web push notifications leveraging systems like SendX. A subdomain with HTTPS support shall be created on your behalf eg: https://smallbiz.sendx.io and your subscribers shall be subscribed to web push notifications to this subdomain. All the web push notifications shall also go from this domain.