For best developer productivity, stay off Slack. 😛

Interesting. We have an opposite experience 🙂

It was mostly a joke. Slack can be a useful work tool too.

Yes , certainly. The other project which I am working on we use it to communicate internally inbetween team members but also stakeholders. It helps our productivity together with other tools like whatsapp and teams. And while we are all working at home because of corona it's crucial I think