![How I foot-gunned our newsletter this week [blog]](https://allblogs.blob.core.windows.net/alldevblogs/thumbs/article-5046afb0df43-full-4c5feff5.webp)
6/5/2026
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How I foot-gunned our newsletter this week [blog]
A developer accidentally breaks their newsletter delivery by misconfiguring DMARC, causing a 3% open rate.