I know that the vtex io settings have a pwa options, but I would like to send push notification or how can I made a serviceworker for do that? 
Hi Andre,
There’s no natively solution in VTEX I believe. Like this issue in GitHub.
But I already see a lot of third pary apps that use serviceworkers to reproduce that feature.
Thanks for the info, so I had really I can say to the client that for this moment it is impossible without third party app