SURBL and similar lists have been walking redirect chains on cold-email burners and listing whole batches at once. You can point burner domains at a ScaledMail masking proxy with an A record. Prospects still see your primary site content. We populate a clone of the main site on the burner — no redirect relationship for SURBL to walk between the two domains. • $0.50/domain/mo if the inboxes are on ScaledMail • $1/domain/mo for external inboxes • Bulk add supported · noindex/nocrawl on the clone I ran a webinar for the CCG community on the broader SURBL playbook (stagger purchases, delay provision, age domains, private warmup, when a listing actually matters for Google vs Microsoft/SEGs). If you're mid-setup and still redirecting, swap those domains to masking before they get scanned as a cluster. If you have questions, post below. Enable: https://app.scaledmail.com/domain-masking Blog: https://www.scaledmail.com/blogs/surbl-blacklist