Catalogue record · hackernews
Test email authentication, spam signals, DNS and technical deliverability for free. Get a clear score, practical fixes and standalone email tools.
MXValidation 用于测试邮件认证、垃圾邮件信号、DNS 和技术可投递性，能给出明确的评分和具体的修复建议，还提供独立的邮件工具。
Seen on hackernews · last checked 2026-10-24.
The teardown — how it actually charges, which mechanism was found, and the seam worth taking — is in the daily letter. This page carries the record and the signals so search engines and link previews have something real to read; the judgement stays with the readers who asked for it.
Get the daily letterThe same record sits in the full catalogue, where every entry can be searched and filtered by the signals above.