feat(emails): sync site styles into WC classic email options + preview thumbnails (NPPD-1537)#4758

kmwilkerson wants to merge 4 commits into

nppd-1524-card-expiry-warning-emailAutomattic/newspack-plugin:nppd-1524-card-expiry-warning-emailfrom

nppd-1537-sync-site-styles-into-wc-email-optionsAutomattic/newspack-plugin:nppd-1537-sync-site-styles-into-wc-email-optionsCopy head branch name to clipboard