Postbox has been acquired by eM Client!
– Hello Thunderbird, my old friend.

If you have been surprised with the message (while opening Postbox) worry not.

It is extremely easy to go back to Thunderbird. Well, at least it was easy for me.

— Download Thunderbird —


link

— Import messages —

Tools -> Import -> Import from another Thunderbird installation

Location of Profiles for Postbox is here
$HOME/Library/Application Support/PostboxApp/Profiles

— Done —

That’s it. You are done setting up Thunderbird.