Why Catch-All Domains Are the Silent Deliverability Killer (and How to Fix It)
In 2025, many SaaS marketers still believe that as long as their email list is “clean,” their campaigns will automatically land in the inbox. But there’s a quiet saboteur hiding inside those so-called clean lists — catch-all domains. Most email verification tools flag these addresses as “unknown,” leaving up to 40% of your list in […]
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