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

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MailCull vs Bouncer: how the verdicts actually compare

Bouncer is the closest competitor to MailCull on positioning. Here is where they win, where we win, and how to choose.

comparisonsdeliverabilityemail-validation

What Is a Role-Based Email Address and Should You Send to It?

Role-based inboxes are not automatically bad, but they often behave differently from personal addresses.

deliverabilitylist-cleaningemail-validation

Email Verification for Small Business: What You Actually Need

A practical look at what small businesses actually need from email verification.

small-businessemail-validationlist-cleaning

Email List Cleaning for Newsletter Operators: Keep Your Subscribers Real

Newsletter operators need list quality too, not just bigger subscriber numbers.

newsletterlist-cleaningdeliverability

What Is MX Record Validation and Why Does It Matter?

MX validation is one of the clearest ways to tell whether a domain appears set up to receive mail.

email-validationdeliverabilitymx

Email Verification Checks Explained: What Each Layer Actually Does

A plain-language guide to the check layers used in modern email verification — from surface syntax to deep SMTP and Microsoft 365 HTTP enumeration.

email-validationcomparisonsverify-email

Why Your Email Service Provider Suspended You (and How to Fix It)

A practical way to think about ESP suspensions, bounce-driven risk, and what to clean up next.

deliverabilitybounce-ratelist-cleaning

How to Set Up SPF, DKIM, and DMARC for Better Email Deliverability

A simple explanation of SPF, DKIM, and DMARC and why they matter for deliverability.

deliverabilityauthenticationspf

The Real Cost of a Dirty Email List: What Bad Data Is Costing You

Bad list data creates compounding waste long before it becomes an obvious emergency.

list-cleaningdeliverabilitybounce-rate