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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What Happens When You Send to an Invalid Email Address

A clear look at the chain reaction that starts with a bad address and ends with weaker deliverability.

deliverabilitybounce-ratelist-cleaning

Email Bounce Rate Calculator: How to Calculate and Interpret Your Rate

The formula is easy. Knowing what the number means is where the useful decisions start.

bounce-ratedeliverabilitylist-cleaning

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.

bounce-ratedeliverabilityemail-ops

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.

bounce-ratedeliverabilityemail-validation

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.

bounce-ratedeliverabilitylist-cleaning

How to Reduce Your Email Bounce Rate: 7 Things That Actually Work

Seven practical fixes for high bounce rates, starting with the list itself.

bounce-ratedeliverabilitylist-cleaning

What Is a Good Bounce Rate for Email? Benchmarks and What to Do if You're Over

A simple way to think about bounce-rate ranges and what they usually signal.

bounce-ratedeliverabilityemail-validation

What Happens to Your Sender Reputation When You Don't Clean Your List

The real danger of list neglect is that it compounds quietly before anyone treats it like an operational issue.

sender-reputationdeliverabilitylist-cleaning

Email Bounce Rate by Industry: Working Benchmarks

Working ranges for bounce expectations across common industries, with the usual caveat that source quality matters most.

bounce-ratedeliverabilitybenchmarks