Email deliverability is not optional for modern publishers. The shift toward "un-designed" emails — single-column, text-forward, no heavy graphics — isn't just a trend. It's a response to how email clients actually work[1].
Pro tip: Text-forward emails consistently outperform designed templates in inbox placement. Gmail's algorithm rewards emails that look like personal correspondence.
The Key Principles
Lead with value. Your first sentence determines whether someone reads the rest.
One idea per issue. Newsletters that try to cover everything cover nothing.
Write like you talk. The best newsletters sound like a smart friend explaining something over coffee.
Here's what not to do:
Stuff keywords into your subject line
Use 15 different font sizes
Embed a full website in an email
"The medium is the message." — Marshall McLuhan
If you're sending from a shared IP without DMARC, your inbox placement likely dropped 15-25% after Gmail's February 2026 update.
Code Example
If you're a developer, you can publish with a single API call:
Use inline code for technical terms like SPF, DKIM, and DMARC.
A Comparison
Feature
Traditional
Markdown-Native
Formatting time
20-60 min
0 min
Email client bugs
Common
Rare
Dark mode support
Manual
Automatic
API integration
Complex
Simple
Footnotes in email
Broken
Endnotes ✓
Acme Corp — The best developer tools in the business. Trusted by 10,000+ teams. Learn more →
The Bottom Line
This is a note callout. Use these to highlight important information that isn't a warning or a tip — supplementary context that enriches the main content.
The best newsletters are written, not designed. Focus on the words. Let Imprimo handle the rendering[2].
That's it for this week. Hit reply if you have questions — I read every response.
Notes
Based on 2026 cross-industry data. Gmail's Promotions tab algorithm penalizes image-heavy HTML emails, while text-forward emails land in Primary.
Imprimo's dual-render engine produces both web HTML and email-safe HTML from a single Markdown source. Footnotes render as interactive popovers on web and numbered endnotes in email.