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How to Detect Catch-All Email Domains in Node and Python

Catch-all domains accept mail for every address, which breaks email verification. Here's how to detect them yourself over SMTP — and how to skip the plumbing.

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venerdì 17 luglio 2026·dev.to
How to Detect Catch-All Email Domains in Node and Python
Catch-all domains accept mail for every address, which breaks email verification. Here's how to detect them yourself over SMTP — and how to skip the plumbing.