SITE_URL="https://example.com" # Newsletter subscribe form endpoint. # Examples: # - Buttondown: https://buttondown.email/api/emails/embed-subscribe/ # - ConvertKit: https://app.convertkit.com/forms//subscriptions PUBLIC_NEWSLETTER_ACTION="" # The email input field name expected by your provider (often "email"). PUBLIC_NEWSLETTER_EMAIL_FIELD="email" # Optional: display copy PUBLIC_NEWSLETTER_TITLE="Subscribe" PUBLIC_NEWSLETTER_DESCRIPTION="Get new posts in your inbox."