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Is Your Tracking Domain Broken? Free CNAME Checker

Tool demo · CNAME Checker

A short walkthrough of the free WarmInboxes CNAME checker: see where a hostname's CNAME points, so a tracking domain that resolves nowhere is caught before a campaign.

CNAME Checker

Follow the full CNAME chain and catch the mistakes that break a cold email tracking domain.

Run the CNAME Checker → Free, no account.

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