thanks – just saw this update from a previous support request:
https://wordpress.org/support/topic/multi-site-post-by-email-not-working?replies=12
“Post By Email won’t change to allow you to post from a script. That would open the door to a lot of abuse from spammers, who would then be able to use Jetpack to post an unlimited number of spam blog posts very quickly.”
Correction:
“it is meant to create a new post with the email body as content.”
