All Error's being sent

[bugsnag]

All Error's being sent

[snmaynard]

The best way to achieve this would be to wrap bugsnag's error middleware so it is only called for an uncaught exception. Something like

app.use(function(err, req, res, next) {
    if (!(err.domainEmitter || err.domainBound)) {
      bugsnag.errorHandler(err, req, res, next);
    }
    next(err)
  });

Hopefully that achieves what you are looking for?