Q: Email action not showing on my lightning layout I added my standard email action to my page layout as shown here : 

But it is not showing on my chatter component on my case lightning page :

I know that for case, lightning component action or standard action do not show up among the button sections, but it should show up among the chatter actions, because i added both the chatter action and lightning action on my layout.
Are there an email setting that control it's visibility?

A: Go to setup and search for Deliverability. Set Access Level to All Email

If it is set to System email only, or No access, it will hide the email actions on the pagelayout.
