Field notes · ~1 post / week
Writing about sending, deliverability, and the rules providers actually enforce.
Practical guides, post-mortems from real sends, and plain-English explanations of why your list quality is doing what it is doing. No fluff, no AI slop, no gated PDFs — just our working notes.
2026
Apr 03
2026
2026
Email Bounce Codes Explained: What 550, 552, 421 Actually Mean
You do not need to memorize every code. You do need to know which ones mean remove, retry, or investigate.
1 minRead →
Apr 03
2026
2026
Soft Bounce vs Hard Bounce: What's the Difference and What to Do
The distinction matters because the right action for each bounce type is different.
2 minRead →
Apr 03
2026
2026
Why Are My Emails Bouncing? Common Causes and How to Fix Them
A practical breakdown of why bounce rates spike and what to do before the next campaign goes out.
2 minRead →
Apr 02
2026
2026
How to Clean an Email List You Inherited
Inherited lists should be treated as unknown assets, not ready-to-send audiences.
1 minRead →
Apr 02
2026
2026
How to Warm Up an Email Domain After a Deliverability Crisis
A deliverability recovery plan starts with stopping the damage, cleaning the list, and rebuilding trust gradually.
2 minRead →
Apr 02
2026
2026
Why Your Open Rate Is Low (and It Might Not Be Your Subject Line)
Before rewriting the subject line, make sure the audience and inbox placement problem are not the real issue.
1 minRead →
Apr 01
2026
2026
The Best Time to Clean Your Email List (Hint: Before It's a Problem)
Proactive cleaning is almost always cheaper than reactive recovery.
1 minRead →
Apr 01
2026
2026
Free vs Paid Email Verification: When Is Free Enough?
The right question is not whether paid is always better. It is whether your use case actually needs more than a strong free first pass.
2 minRead →
Apr 01
2026
2026
What Is a Disposable Email Address and Why It Matters for Your List
Disposable email addresses create fake growth, poor engagement, and future bounce risk.
2 minRead →