Mail Design Principles

POST 6/7 👉2025: Why Design Is Now a Deliverability Signal—Not Just a Branding Element. Good design doesn’t just get attention. It gets delivered — to the right part of the inbox. Let’s get one thing clear: Promotions is inbox. Updates is inbox. What matters in 2025 is avoiding spam, not forcing Primary. If your email is expected, renders cleanly, loads fast, and respects UX principles, you're in the right place. Too many ecommerce marketers still underestimate how much design affects deliverability. It's no longer just about what looks good. Design performance is now tied to how your domain is scored by Gmail, Apple Mail, and Outlook. Here’s how. Mobile-first rendering: Over 74% of ecommerce opens now happen on mobile. If your layout breaks or loads slowly, you're triggering behavior Gmail sees as friction — not engagement. Load speed and responsiveness: Gmail and Apple Mail monitor how quickly your message displays and how long the user interacts. Heavy layouts or large imagery can cause quick exits, reducing future inbox trust. Dark mode compatibility: Unreadable emails in dark mode break the experience. Invisible text or poor color contrast are quietly penalized. Accessibility: Skipping alt text, using tiny fonts, or low-contrast layouts may technically deliver your message — but visually fail for many. Those silent exits hurt engagement scoring. Real-world case: A brand redesigned its templates with GIFs, AMP, and rich visuals. On desktop? Beautiful. On Gmail mobile? Broken. Result: click rates dropped, complaint rates rose, and inboxing fell. They reverted to fluid layouts, lighter assets, and simpler code. Engagement and delivery recovered within 2 sends. Email design checklist for 2025: 1. Keep size under 100KB 2. Use system fonts 3. Code mobile-first, not retrofitted 4. Preview in both dark/light modes on Gmail and Apple Mail 5. Always use alt text 6. Avoid base64 images and fixed-width tables 7. Load-test AMP and interactive elements 8. Match design tone with your website 9. Ensure contrast and readability pass basic checks Takeaway: Every second of lag is a penalty. Every failed render hurts trust. Gmail is evaluating design behaviors—not beauty. Design is no longer just branding. It's inbox access. #email #emailmarketing

Have you noticed the flood of new developments from major mailbox providers? In some ways we shouldn't be surprised - Gmail, Yahoo and Microsoft want to keep users engaged in their inboxes (where they’re exposed to advertising!). Most of these changes are here to stay, which means email marketers need to adapt. Over the past few months, we’ve seen quite a lot of changes: AI-generated summaries, AI-powered personal assistants, reductions in inbox storage, subscription managers, catch-up features, reductions in complaints rate guidance, and plenty more! Perhaps most important is Gmail now prioritising the Promotions tab by “Most Relevant” rather than “Most Recent,” which means engagement matters more than ever. Rather than looking for shortcuts, focus on understanding the signals Gmail uses to determine inbox placement and optimise for those. With Black Friday just around the corner, I know many of you are wondering how these changes will impact your programs, and you’re not alone. Danielle Gallant and I unpack all these developments on our latest Email After Hours episode. Which are most important, how will they affect your subscribers' behaviour, and how should you respond? Some practical takeaways: ◾Apply SEO tactics to your email content to ensure AI summaries surface the right content from your emails.  ◾Don’t send all-image emails, or embed text in images, that can’t be properly read or interpreted by AI.  ◾Let subscribers opt down and snooze rather than losing them completely. ◾Focus on amplifying mailbox provider engagement metrics like clicks, forwards and replies. ◾Design for Gmail’s new “nudges” feature with clearly defined offer windows and schema-ready elements.  ◾Consider implementing BIMI to build trust as AI-powered scams become more sophisticated. The landscape is shifting quickly, but these changes aren’t necessarily bad for email marketers willing to adapt their strategies. Check out Email After Hours to hear our full breakdown on iTunes, Spotify or Youtube. EAH also lives here at: https://lnkd.in/eFi7WikM What mailbox provider changes are you most concerned about heading into Black Friday?

We saw this coming 12+ months ago...HTML-heavy emails are losing The rules of email changed in 2025 Gmail, Yahoo, and Microsoft now judge every message by how it looks, not just what it says Their filters are ruthless. If you send glossy, image filled emails, you are losing reach, replies, and revenue Here’s what changed in the last month: Gmail Promotions update, September 2025: ↳ “Most relevant” sorting and a new “Purchases” view. ↳ HTML/image heavuy layouts go straight to Promotions, not Primary Why image-heavy HTML is a liability: Spam filters still punish high image-to-text ratios ↳ Too many images trigger spam rules. ↳ These are the same signals used by spammers Large emails get clipped ↳ Gmail cuts off emails above 102 KB ↳ Important content and unsubscribe links can disappear ↳ Engagement drops, and your sender reputation suffers Formatting now decides your fate ↳ Gmail’s new models look at every pixel and line of code. ↳ Clean, text-based emails from real people reach the Primary tab. ↳ Banner-filled layouts almost never do. Why plain text is winning: Plain text feels human ↳ Smaller, cleaner, and more personal ↳ Looks like a real conversation, not a broadcast Our 2025 outbound/lead gen checklist: Keep emails image free ↳ No logos or imagage, no hero banners Design emails for Primary inbox ↳ Marketing updates go to Promotions ↳ 1:1 feel outreach goes to Primary The bottom line is that the 2025/26 inbox rewards authenticity If you still rely on glossy HTML templates, you are feeding an algorithm that filters by design. Plain text, personalised email is not just cleaner. It is compliant, higher performing, and built for the future

Your email designs could be tanking your deliverability And you might not even realize it They can have bad image-to-text ratios, which can: - Confuse email clients trying to render them - Be unreadable on screen readers - Get flagged by spam filters This messes with your deliverability rates Plus, it trashes your sender reputation Don’t let your design throw your email marketing off track Make sure you: - Use >500 characters of text to dodge spam filters - Balance text & images (60/40 mix works best) - Compress images to cut down load times - Break up big image blocks with live text - Add alt text for every image Keep your email designs looking sharp But not at the cost of deliverability Get the balance right, and your emails will hit inboxes & boost your rev/sales

Ready for a truth bomb? That beautiful image-only email design your team created is probably costing you sales… 💸 I know it's tempting to use one big image in your emails. It gives you perfect design control and it looks identical everywhere... But here's what we're seeing happen with brands who take this approach: • 43% of Gmail users have images turned OFF (they see nothing!) • Spam filters are more likely to flag your emails • Slower loading times on mobile = abandoned emails • Screen readers can't interpret them (excluding visually impaired customers) The real-world impact? Our data analysis shows: • Up to 23% higher bounce rates • Significantly reduced open rates  • Lower click-through rates when images fail to load • Decreased deliverability over time When we helped Pooky move away from image-heavy emails to a balanced HTML approach, their email revenue increased 5.5x in just four months. Want better results? Try this instead: ✅ Use HTML structure with strategic imagery ✅ Embrace responsive design that adapts to different screens ✅ Include meaningful alt text for all images ✅ Keep critical messages (especially CTAs) in text form ✅ Test across multiple devices before sending What email design approaches have worked best for your brand? #emailmarketing #ecommerce #deliverability #dtcbrands #customerloyalty

DTC brands, Your emails might look beautiful… but they’re secretly killing your sales. This one blows my mind. I see it ALL. THE. TIME. Brands spending hours (or paying agencies $$$) designing “beautiful” emails… And then nobody even sees them! Just audited a 7-figure DTC brand that thought their email game was solid. Turns out 63% of their emails were hitting spam. Sixty. Three. Percent. (That’s not just bad—that’s catastrophic.) And the main reason? Image-only emails. (Yeah, they looked nice… but nobody was seeing them.) Here’s the problem: ❌ Images don’t always load (especially on mobile) ❌ No text = no context (ISPs likely to mark it as spam) ❌ Invisible CTAs = low clicks, low sales What winning brands do instead: TEXT THAT SELLS: ✅ Clear message ✅ Visible CTAs ✅ Always loads SMART IMAGES: ✅ Enhance, don't replace ✅ Mobile-friendly ✅ Support the sale INBOX-FIRST DESIGN: ✅ Spam-proof structure ✅ Balanced text-to-image ratio ✅ Easy A/B testing Bottom line? Your email design doesn’t matter if no one even sees it. If you’re still sending image-only emails, you’re making it WAY harder to land in the inbox long term. And while you’re busy perfecting the design… Your competitors are landing in the inbox and cashing in. Which one do you think wins?