furthermore:
>I’m quite happy to query the wp_db

nothing to query if nothings been set anywhere. i.e postcodes only get captued once orders are submitted of course (by which time the above is pretty irrelevant, no ?)

>I mean, when the postcodes are setup in the admin system
ok.
not much to query though.
pretty much all options are in the options table in a serialised array.
i.e – in a wordpress way:
$wppizzaOptions=get_option(WPPIZZA_SLUG);
(ideally, assuming that that constant is available wherever you put your script)

or just

$wppizzaOptions=get_option(‘wppizza’);

you’ll find it in $wppizzaOptions[‘order_form’] somewhere, depending on which field you used

or if you want to go really wild check this:

https://www.wp-pizza.com/topic/extending-the-plugin-with-a-class/

$this->pluginOptions in that class would return the same as $wppizzaOptions above

from the same options table/data…(?)
(thought that’s obvious but I might misunderstand the question)

>It’s probably easier for me

dunno how that’s easier, but whatever works for you

>Generating emails, is that just html

no. there is html of course, but a bunch of php too
(assuming we are talking about /templates/wppizza-order-email-html.php )

use filters(ideally)
https://www.wp-pizza.com/topic/html-email-editing/
https://www.wp-pizza.com/topic/filteredit-header-of-html-emails/

, or copy and edit
https://www.wp-pizza.com/topic/can-i-send-html-emails/