You have already implemented branded designs for automation and broadcast emails, including automation emails, mass-mailing (broadcast) emails, chat replies, and card-delivery emails. These all use the branded email template with the logo, header, footer, and social links. Agency sub-accounts are also branded with their agency's design.

However, this branding does not extend to SMTP transactional emails. Currently, the design for these emails is very outdated ("boomerangme style") and cannot be customized in terms of colors or overall design. This limitation is problematic, as it prevents us from maintaining consistent branding and a professional appearance across all email communications.

Please provide the option to fully customize SMTP transactional email templates to match our branded design.