Dev Tools · 1h ago
Why Email Authentication Alone Won't Beat Spam Filters
Even with SPF, DKIM, and DMARC passing, a fresh domain sending 4,000 emails landed in spam because reputation is separate from authentication. IP and domain reputation start at zero, and providers default to suspicion until engagement builds. It takes 45-60 days of sending to engaged users to establish stable inbox placement.
Meridian48 take
The article correctly highlights a common blind spot for developers, but the 'warm-up' advice is well-known among email marketers—this is more a reminder than a revelation.
Read the full reporting
You fixed SPF, DKIM and DMARC and email still lands in spam. Here's why. →
DEV Community
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