Stop wasting time on deliverability “advice” that doesn’t actually move the needle. Let’s bust three myths that refuse to die.
❌ Myth #1: “Certain words trigger spam filters”
The idea that words like “free,” “act now,” or “limited time” automatically land you in spam is outdated by a decade. Modern spam filters use machine learning, sender reputation scoring, engagement signals, and authentication protocols — not keyword blocklists from 2005.
✅ Reality: Your sender reputation, authentication setup (SPF, DKIM, DMARC), and recipient engagement matter infinitely more than any single word in your subject line.
❌ Myth #2: “Sending at specific times guarantees inbox placement”
Tuesday at 10 AM won’t save you from the spam folder. Mailbox providers don’t care when you send — they care about whether recipients want your email. Timing affects open rates, not deliverability.
✅ Reality: Consistent sending patterns, healthy list hygiene, and positive engagement signals (opens, clicks, replies) determine inbox placement. Not the clock.
❌ Myth #3: “Buying a dedicated IP immediately fixes deliverability”
A brand-new dedicated IP has zero reputation. Sending volume on it without proper warm-up can actually make deliverability worse. A shared IP with good senders often outperforms an improperly warmed dedicated one.
✅ Reality: Dedicated IPs require methodical warm-up over weeks, consistent volume, and strong authentication. They’re a tool, not a magic fix.
What actually moves the needle?
- Proper SPF, DKIM, and DMARC configuration
- Clean, permission-based lists
- Consistent sending volume and patterns
- Monitoring engagement and bounces
- Building sender reputation over time
Stop chasing myths. Start building infrastructure that mailbox providers actually trust.