This is exactly the kind of functionality that I was missing when I was building Toc [1], a decentralized messaging app built on web technologies and Cordova.<p>Since mobile devices tend to pause apps rather aggressively, getting the Cordova app to retry message sending in the background required messing with native plugins, and getting the browser app to do this was simply not possible at the time.<p>Glad to see this feature finally become a proper web standard!<p>[1] <a href="http:&#x2F;&#x2F;toc.im&#x2F;" rel="nofollow">http:&#x2F;&#x2F;toc.im&#x2F;</a>