Does the app start on boot when set as default SMS app without explicit permission?

[projectextremum]

Didn't read internal docs in code if any, but does the app start up and can provide notifications without an explicit run at startup permission (since it is set as default SMS app)? Or do one have to open app manually upon each boot?

[strlcat]

In my experience on Android 6.0 it was able to display notifications of coming SMS messages just after boot. No manual startup was needed. Of course if it is set as a default SMS app.