Unsubscribe link leads to error message

Hi @mganley 👋

Aaron here from the Customer.io support team. I’d be happy to assist you on this issue!

Taking a look at the screenshot you provided, we can see that your domain is “canopie.app”. What’s important to note here is that all domains that use the “.app” TLD have what’s known as a HSTS policy that forces all browsers to try and establish a HTTPS connection to the domain and its subdomains. You can see this documented in the marketing materials from Google for .app domains: https://get.app/#benefits

With that being the case, you must set up HTTPS link tracking for your “email.canopie.app” tracking subdomain that you’re looking to use in Customer.io. We provide a guide on 3 of the common ways to achieve this in our documentation, but using AWS Cloudflare will likely make the most sense for your engineering teams since your website is already hosted there: https://customer.io/docs/journeys/https-link-verification/#setting-up-https-link-tracking-with-amazon-cloudfront.

So, to provide clarity in closing, you’re seeing the “common name invalid” error when clicking your tracked links because your browser is trying to access our SSL certificate, which only covers “customeriomail.com” and not your domain. Using one of the methods shown in the link above (such as AWS Cloudfront), you’ll be able to host your own certificate and then “proxy” traffic to Customer.io for tracking. 

I hope that this helps to give clarity to the issue and the next steps to look into going forward. If you’d like to reach out to our support team directly with any further questions, you can do so by clicking the Need Help? link in the top-right corner of your Customer.io workspace and we’d be happy to hear from you.

Best,

Aaron