After learning that the QuickActionDefaultsHandler interface doesn't work with Lightning Experience, I tried to implement the suggestion found in the comments of this answer, which is to set the Predefined Field Values for the Email Case Action.

I was able to get the CC Address and BCC Address to reflect my Predefined Field Values for that action, but for some reason, the From Address does not match the Predefined Field Value I set on the action.

The From Address I predefined is the Email2Case address I have set in settings, and is verified and working. It's one of the choices when the action is rendered, but the default FROM address still shows the logged in user email address.

Are there any other steps I need to take to default the FROM address in a LEX Email Case Action?

1 Answer 1


As it turns out, I needed to select From Predefined Field Name instead of From Address. After choosing that option, I was able to select one of the existing validated email address I have setup in my org from a picklist:

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I tested this, and now the Email Case Action defaults to the FROM address I specified.

  • Can we make the FromAddress readonly? Commented Feb 12, 2020 at 15:13

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