How to use other shortcodes inside Contact form 7- forms? indeed explains how to use other shortcodes inside Contact Form 7 forms. But that doesn't make them usable in the mails that Contact Form 7 sends on submission of the form. How do I make them work there too?
WPCF7 incorporates more filters than used in the answer you already found.
Analogously to that, the
Note that this is an educated guess and untested.
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