· 6 min read
Email validation API: understanding each result
How to use an email validation API from your server: the request, deliverable/undeliverable/undetermined results, per-check states and what to do with uncertain answers.
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- · 5 min read
How to check a domain’s MX records
Learn how to look up a domain’s MX records, interpret the response, and distinguish mail configuration from whether a particular mailbox exists.
Read → - · 8 min read
SMTP probing: how to know if an email exists without sending anything
Learn how SMTP checks work without sending a message, what server responses mean and why catch-all domains or temporary blocks can leave results inconclusive.
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