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Spam detection on newsletters too strict

calendar_today September 13, 2026 person @samuelclay Samuel Clay domain newsblur

Sorry for the long wait on this. You have it right, the rejections are coming from ImprovMX, which receives mail for newsletters.newsblur.com , and their SpamAssassin scoring bounces anything at 5.0 or above before NewsBlur sees it. NewsBlur itself doesn’t filter newsletters at all, and I agree the secret token in the address should be enough.

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