SPF, DKIM, DMARC and BIMI: A Plain-English Setup Guide for Cold Email
What each email authentication record does, how they work together, and the exact DNS entries you need before sending your first cold email.
Topic
Deliverability
Practical guides on cold email infrastructure, inbox placement and building a CRM that fits your business.
How to Warm Up a New Domain and IP Without Burning It
A practical 6-week warm-up plan for new cold email domains and dedicated IPs, with daily volume targets and the warning signs to watch.
Dedicated IP vs Shared IP for Cold Email: When Each One Makes Sense
Dedicated sending IPs give you control, but only at the right volume. How to decide, and how to warm up and run a dedicated IP with PowerMTA or Postfix.
Google Postmaster Tools and Microsoft SNDS: A Practical Guide for Cold Emailers
How to set up Google Postmaster Tools and Microsoft SNDS, what the dashboards tell you, and which numbers to act on.
How to Run an Inbox Placement Test (and Read the Results Properly)
Why sending a test to your own Gmail tells you nothing, how seed-list placement tests work, and what to do when results look bad.
Open Tracking Is Hurting Your Cold Emails. Use a Custom Tracking Domain (or Turn It Off)
Shared tracking domains, invisible pixels and Apple Mail Privacy Protection: what open and click tracking really cost you, and how to do it safely.
How Many Cold Emails Can You Send Per Day Without Hurting Deliverability?
Safe sending limits per mailbox and per domain, and how to calculate how many domains you need for your outreach volume.
How to Bring Your Cold Email Bounce Rate Under 2%
Hard bounces, soft bounces, catch-all domains and why bounce rate is one of the fastest ways to lose inbox placement. A practical cleanup process.
Your Domain or IP Is Blacklisted. Here's What to Do First
A calm, step-by-step plan for when your domain or sending IP shows up on Spamhaus, Barracuda or another blocklist.