If your cold emails vanish into the void, you might be playing Spam Filter Bingo — and losing. Here are the classic traps that kill deliverability before your copy even gets a chance.
1. You skip the warm-up
Ramp gradually and keep warm-up running. Tools like TrulyInbox or Warmbox help.
2. You don’t personalize
Generic email gets ignored. SalesPort’s AI Researcher helps personalize efficiently.
3. You neglect technical setup
Missing SPF, DKIM, or DMARC is like mailing without a stamp.
4. You send to outdated contacts
~30% of people change jobs yearly. Verify lists or risk bounces and spam flags. SalesPort provides verified, up-to-date contacts.
5. You send too many emails (or spike volume)
Stay under ~30/day during warm-up. Never blast from 0 to hundreds. Cap around 100/day per mailbox — add accounts to scale.
6. Your ESP is trash
Use professional Google Workspace or Microsoft 365 domains — not free consumer accounts.
7. Your contact list is sloppy
Broken characters and mangled names get deleted. Clean data wins.
8. You ignore the law
Honor opt-outs and use compliant tools. Privacy fines are real.
9. You forget mobile users
Over 40% of opens are on phones. If it looks bad on mobile, it’s gone.
10. You send too many links and spammy words
One link max. Avoid “Buy now” / “Free money” red flags.
Score yourself
Hit 2+ of these? Fix deliverability before you write another sequence.