Make GNUs "sent" show recipient, not author

https://www.reddit.com/r/emacs/comments/e66ewg/make_gnus_sent_show_recipient_not_author/

I’m a GNUs user and am pretty happy with it. However, I have a “Sent” message group where the summary line is the same as everywhere else, meaning it includes the author (me!) and not the recipient. How can I change the summary line format in just the outgoing buffers (or, alternatively, if the author is me)?

For reference, here’s my current insensitive line-format variable:

(setq gnus-summary-line-format "%U%R%([%-30,30f]:%) %-50,40s(%&user-date;)\n")

The winning solution? gnus-ignored-from-addresses was the missing variable!

(setq gnus-ignored-from-addresses (regexp-opt tsa/my-address-list))