I have a simple newsletter block on my homepage and am building a mailing list with squarespace email campaigns. I'm curious if it's possible to generate code to provide to a partner for them to embed my newsletter sign-up on their (my partner's) site (which isn't a squarespace site) the same way one could embed a mailchimp newsletter sign-up. I'd like to be able to capture emails via this form on the partner's site (emails which would be added to my squarespace email campaign), without the user having to come to my site to sign-up.