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.