Lacewing Journal
Everything we have published in this topic. Sources cited, numbers checked, and our own products criticised where they deserve it.
No mailbox provider has ever documented penalising machine-written copy, and no independent study exists either way. What is documented: authentication, complaint thresholds, list decay, and which inbox is genuinely hard to reach.
AI-heavy pages rank at roughly the same rate at every position on page one. The policy language, the enforcement record, the data, and the traffic collapse that has nothing to do with who wrote your content.
Detection is forensics on a scene nobody photographed. SynthID, C2PA and the EU AI Act point at a different answer, and each has a specific failure the marketing does not mention.
Benchmark-beating voice deepfake detectors fall apart on real phone calls. The documented losses, why lab accuracy does not survive a codec, how to read a vendor accuracy claim, and the cheap process controls that stopped two attacks cold.
Four distinct techniques sold under one word. What the research says about whether each defeats detection, what each costs you in meaning and terminology, and why the leading independent leaderboard is owned by the tool it ranks first.
Detector errors are not random. They concentrate on second-language writers, neurodivergent writers and anyone writing in a constrained register. The evidence, the arithmetic, the court record, and a procedure that holds up.
Perplexity, probability curvature, supervised classifiers, watermarking. What each generation of detector actually measures, what independent testing found, and the theoretical ceiling nobody can engineer around.