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Deliverability

Disposable Domain Detection

The practice of identifying email domains that offer temporary, self-destructing addresses used to avoid permanent registration.

Disposable domain detection involves recognizing domains from services that provide short-lived email addresses (e.g., mailinator.com, 10minutemail.net). These addresses are often used for one-time verification and quickly become invalid or abandoned. Sending to disposable domains wastes resources, increases bounce rates, and can damage deliverability, so they are typically filtered out during list validation.
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