Thank you for reaching out to us about the blocklisting you noticed! We take blocklists very seriously and have a deliverability team dedicated to monitoring and resolving these.
There are hundreds of email blocklists, and only a handful affect your messages' delivery. The one you've pointed out, SpamCop, is not typically an impactful blocklist. SpamCop listings are automatically removed in 24 hours, and less than 1% of email users utilize SpamCop. Since SpamCop is rarely used to filter mail, it's highly unlikely to affect your email delivery.
If a SpamCop blocklisting impacted you, you would experience an elevated amount of bounces. If you believe you have a subscriber who bounced due to a SpamCop listing, please send us the subscriber information, and we'll be happy to take a look for you. If that happens, I recommend you email email@example.com to look at your account.