The Throwaway Email API allows users to check if an email address is from a disposable domain. It provides endpoints to search by domain name or email address. This service is useful for validating and filtering unwanted temporary emails.
Block disposable signups, clean mailing lists, or build a DNS sinkhole for throwaway domains — all without signing up. You can call the API directly from your signup flow, download the domain list for offline filtering, or use DoH to provide instant DNS-level blocking. It’s easy to try because no API key is needed, and responses come in JSON, TXT, or YAML. Note the service is public and rate-limited per IP, so plan caching for high-volume use.
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