If you are using a custom domain, please take the following steps before enabling HTTP Strict Transport Security (HSTS); otherwise, your Newsletter links may not resolve properly for your subscribers.
- Set up a CDN service or other server to manage SSL certificates and keys for your link whitelabel domain (this is the fully qualified domain name in use by all links in your Newsletter, e.g., link.forum.bigboard.com). SendGrid offers some sample configurations here: https://sendgrid.com/docs/ui/analytics-and-reporting/click-tracking-ssl/. If you use Google Cloud Platform, feel free to drop us a line for guidance on using custom origins with Internet endpoints.
- Once you’ve configured the server and successfully issued SSL certificates for your link whitelabel domain, drop us a line. We will confirm your setup and update your account.