Email check — 搜索 是的
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Search Yeah 工具

Email check

Validate email format and look up MX records.

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Related 搜索 是的 工具s

These checks complement the result above. The current domain/URL is carried forward when the next tool accepts it.
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SPF / DKIM / DMARC

Read SPF, DMARC and common DKIM selector TXT记录 for a domain.

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Spam blacklist

Check an IPv4 address against common DNS-based block lists.

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DNS 查询

Look up A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records with TTL plus basic email-DNS checks.

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TXT记录

All public TXT记录: SPF, verification, site tokens, BIMI and custom text.

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安全
搜索 是的 accepts only public Internet targets. Local, private and reserved addresses are blocked, redirects are revalidated, standard web ports are enforced and diagnostics use short timeouts.