Blog

Cold email tactics that actually ship

No fluff. Real numbers from real campaigns.

Deliverability

Gmail's 2024 bulk-sender rules: what actually matters

RFC 8058 unsubscribe, 0.3% spam threshold, DMARC alignment — a plain-English breakdown.

Coming soon · Jan 2026
Warmup

The 30-day warmup ramp that keeps you out of spam

Day-by-day volume schedule, reply rate targets, and when to pull the plug.

Coming soon · Feb 2026
Guide

SPF + DKIM + DMARC in 10 minutes (Hostinger + Cloudflare)

Copy-paste DNS records with actual TTL and priority values.

Coming soon · Mar 2026
Templates

5 cold email openers that get 20%+ reply rates

The audit-driven angle, the shared-connection angle, the 'I broke your site' angle.

Coming soon · Apr 2026
Debugging

Why your domain is on Spamhaus (and how to get off)

The 3 causes we see 90% of the time, plus the remediation path.

Coming soon · May 2026
AI

AI personalization at scale: signal vs slop

The prompts we use to keep AI-drafted openers from sounding AI-drafted.

Coming soon · Jun 2026