ZDN Whitelist Outgoing Email is a WordPress plugin that filters outgoing emails to only whitelisted addresses, replacing others with a fallback. It supports wildcard domains and preserves original recipients in display names. All messages are logged with full details for review. Filtering is disabled by default to avoid impacting live sites.
ZDN Whitelist Outgoing Email sits in PulseGate's Developer Tools category. It focuses on preventing accidental emails to real users from development or staging WordPress sites. It is built as a B2B product for wordpress developers. ZDN Whitelist Outgoing Email costs nothing to use. ZDN Whitelist Outgoing Email is available on the web, and it can be self-hosted.
cuongquach builds and maintains ZDN Whitelist Outgoing Email, and the product first shipped in 2026. Key capabilities include Email Whitelisting, Wildcard Domain Support, and Fallback Address. The interface is available in English and Tigrinya.
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