Practical email marketing thinking
Breakdowns, benchmarks, best practices and observations for modern email marketers.
Your Email Gets Summarized Before It Gets Read: How to Write for the AI Inbox
Gmail and Apple now put AI summaries between your email and your subscriber – here's what's confirmed, what isn't, and how to rewrite subject lines and openers.
Read the post →Outlook Rejects Mail Now: What 550 5.7.515 Means and How to Fix It
What Microsoft's high-volume sender rule requires, how to read the 550 5.7.515 bounce, and a triage order that gets you to a fix.
Read the post →Google Just Made Postmaster Tools Readable (Here's What the New Verdicts Mean)
A plain-English verdict system landed in Postmaster Tools v2 in June – here's what it actually shows and where the thresholds moved.
Read the post →Building Your First Welcome Series: A Step-by-Step Guide
How many emails, what goes in each one, when to send them, and what good performance actually looks like.
Read the post →Gmail & Yahoo Sender Requirements: What's Actually Required in 2026
What's actually enforced, what's just best practice, and what to check on your own domain before your next send.
Read the post →Where email marketing stands in 2026 – and what 2027 is already doing about it
Real benchmarks from Klaviyo, Validity, Braze, and Data Axle – plus what 2027 is already doing about it.
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