How to Write a Newsletter with DALL-E

DALL-E, the artificial intelligence image generator developed by OpenAI, can radically transform the creation of your newsletters. By producing unique and personalized visuals for each edition, you capture the attention of your subscribers as soon as they open the email. No more generic stock images: with DALL-E, each illustration is custom-made to accompany your message. In this tutorial, you will learn how to use DALL-E to design impactful header visuals, thematic illustrations, section icons, and call-to-action images that reinforce the visual identity of your newsletter. Whether you are a content creator, marketer, or entrepreneur, this step-by-step guide will enable you to produce visually memorable newsletters without graphic design skills.

Prerequisites

1.An OpenAI account with access to DALL-E (via ChatGPT Plus or the API)
2.A newsletter sending tool (Mailchimp, Brevo, ConvertKit, or similar)
3.A clear idea of the theme and target audience of your newsletter
4.The image dimensions required by your emailing platform

Steps

Define the visual identity and structure of your newsletter

Before generating images, establish a consistent visual guide. Choose a color palette (2-3 main colors), a graphic style (flat illustration, watercolor, photorealistic, etc.) and identify the spots needing visuals: header banner, article illustrations, section dividers, and call-to-action button. Note these choices to reuse them in each DALL-E prompt to maintain visual consistency from one edition to the next.

Tip: Create a reference document with your stylistic choices and reuse the same descriptive terms in each prompt to ensure consistency.

Create the header banner with DALL-E

The banner is the first visual element your readers see. Generate a header image that reflects the theme of your edition while staying true to your brand identity. Specify in your prompt the landscape format (16:9 or 3:1), the chosen style, colors, and the main subject. Avoid asking for text in the image because DALL-E handles typography poorly — add text later with your emailing tool.

Create a newsletter banner in 1200x400 pixels format, modern flat design illustration style, navy blue and coral palette. The subject is [YOUR_THEME]. Clean background with minimalist graphic elements, no text or letters whatsoever. Soft lighting, balanced composition.

Tip: Generate 3-4 variants and choose the one that integrates best once the title is added on top.

Generate illustrations for each section

Each section of your newsletter deserves a visual that summarizes its content at a glance. For an article on marketing trends, an evocative image is better than a stock photo seen a thousand times. Adapt your prompts to each section's subject while keeping the same graphic style defined in step 1. Use a square (1:1) or 4:3 format depending on your template layout.

Flat design illustration for a newsletter section on the theme [SECTION_SUBJECT]. Minimalist style, navy blue and coral colors on white background. Square format 800x800 pixels. No text, no letters, only symbolic visual elements representing [KEY_ELEMENTS_OF_SUBJECT].

Tip: Maintain a consistent ratio across all section illustrations for a professional look in your template.

Design call-to-action visuals and dividers

Secondary graphic elements (dividers, CTA backgrounds, section icons) contribute to a smooth reading experience. Use DALL-E to create subtle decorative patterns, textured backgrounds for your action buttons, or small illustrations that serve as transitions between your sections. These elements should be discreet but consistent with your palette.

Create a minimalist horizontal decorative pattern serving as a section divider for a newsletter. Flat design style, navy blue and coral colors on transparent background. Dimensions 1200x80 pixels. Simple and elegant geometric shapes, no text.

Tip: Dividers and small visuals can be reused from one edition to another — create a library from the start.

Assemble, optimize, and test your newsletter

Import your DALL-E images into your emailing tool. Compress them for the web (aim for under 200 KB per image) with TinyPNG or Squoosh. Systematically add descriptive alt text for accessibility and mail clients that block images. Test display on desktop, mobile, and dark mode. Check that images do not dominate text content — a 60% text / 40% images ratio is ideal for deliverability.

Tip: Send yourself a test email on at least 3 different mail clients (Gmail, Outlook, Apple Mail) before the final send.

Common mistakes to avoid

✗Asking for text or titles directly in DALL-E images — the typographic rendering is often illegible or inconsistent
✗Changing graphic style at each edition, which harms brand recognition and disorients subscribers
✗Using images that are too heavy (uncompressed) which slow down loading and increase bounce rate
✗Overloading the newsletter with images at the expense of text, which triggers spam filters
✗Not adding alt text to images, making the newsletter inaccessible and invisible when images are blocked

FAQ

Can DALL-E generate readable text on newsletter images?

DALL-E 3 has made progress in typography, but the result remains random, especially in French with accents. The best practice is to generate images without text with DALL-E, then add your titles and text via your emailing tool or an editor like Canva. This gives you total control over font, size, and positioning.

How to maintain visual consistency between different editions?

Create a reference 'prompt template' that always includes the same elements: artistic style (e.g., flat design), color palette (e.g., navy blue #1B2A4A and coral #FF6B5B), mood, and format. Keep this template in a shared document and only modify the specific subject for each edition. You can also use DALL-E's editing feature to adjust existing images rather than creating new ones each time.

What image formats and dimensions to use for a newsletter?

For the header banner, use 1200x400 pixels (3:1 ratio). For article illustrations, 800x600 pixels (4:3 ratio) or 800x800 pixels (square). For dividers, 1200x80 pixels. Always export as PNG for flat illustrations or JPEG at 80% quality for photorealistic images. Compress each image to under 200 KB and keep total image weight under 1 MB for good deliverability.

How to use this prompt

Copy the prompt with the button above.
Paste it into ChatGPT, Claude or your favorite AI assistant.
Replace the bracketed variables with your details, then refine the result.

About Prompt Guide

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