
I'm a HUGE fan of Front. We use it at Weekend Fund for its collaborative features, most notably shared email drafts and inbox chat. We previously used Spark, which has the same feature set, but found it slow and buggy.
With Front you don't need to use email for your teams. You can live in Front without a problem. Downside is that is a bit expensive and only offers annual plans.
The best platform to scale global customer support with efficiency and clarity