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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Email List Cleaning vs Email Verification: What's the Difference?

A practical explanation of where verification ends and broader list cleaning begins.

list-cleaningverify-listverify-email

Email Verification for Freelancers: Why It Matters When You're Solo

When you work solo, bounced emails and weak list hygiene are not somebody else’s problem. They are yours.

freelancersverify-emaillist-cleaning

Email Verification for SaaS: Clean Your User Database

When user emails go bad, your onboarding and lifecycle data get weaker too. Cleanup is part of product ops, not just marketing.

saasverify-listverify-email

Can You Verify an Email Address Without Sending an Email?

A practical explanation of non-sending email checks and where their limits are.

verify-emailemail-validationdeliverability

How to Check if a Domain Can Receive Email

MX lookup is the core concept. The real question is whether you want to do it manually once or across a whole list.

mx-recordsemail-validationdomains

How to Tell if an Email Address Is Fake

Some fake addresses are obvious. The more useful ones are the problems that only show up once you check them properly.

verify-emailemail-validationfake-emails

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.

email-validationverify-listverify-email

How to Use MailCull: A Complete Walkthrough

A complete walkthrough of MailCull from signup to first cleaned list, including how to read the 20-code evidence chain on every verdict.

mailcullverify-listverify-email

How to Check if an Email Address Is Valid

A straightforward way to think about whether an email address is worth trusting before you send.

verify-emailemail-validationdeliverability