i wonder how one would do the same thing with bbdb.

with hyrolo its basically just an org file; hyrolo-grep narrows to records that match and then you use regular commands from there to pluck the relevant addresses.

in this snippet it searches for every blob with a given tag, copies to a new buffer, deletes all but address lines, and formats it like a fedi post tagging everyone in the mailing list.

cc @paul @freemo who also loves org