On 20 Feb 2018, at 12:48, Alain Israel wrote:
I have this setting ON (in the Finder preferences; in the System preferences, there does not seem to be a Prefer tabs setting in the Dock pane), but the new messages still open in a separate window.
It's in the Dock pane of the System Preferences. Here's an image and some of the neighboring settings:
![](cid:71255605-7F54-4364-ACF7-F08666EF22B2@freron.com "Screen Shot 2018-02-20 at 13.44.49.png")
I hope that helps. -- Benny
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