Email copywriting and design for ecommerce

Copy and design should solve the same task

An email can look polished and leave the reader unsure what to do. Copy and design start with a specific task: understanding something new, comparing products, answering a question or returning to a decision. That task determines which information comes first, which image helps and where the link should lead.

Before production, gather the proposition, audience, product or content destination, and conditions to respect. Add examples of the brand’s voice and real customer questions. An adjective such as “premium” does not explain what someone should perceive or understand.

The scope may include copy, design, platform implementation and review of the assembled email. Put that in writing: an approved composition in a design tool does not yet prove that the message works in the inboxes where it will be read.

Copy example: turn a generic promise into a clear decision

Imagine a campaign for a fictional store selling linen shirts. The example aims to help someone choose a garment, not assert features of a real product. Confirm the terms and attributes of any published piece against the catalogue.

The table shows how different parts of an email can perform complementary tasks without repeating the same phrase in every space.

This example needs a page that supports comparison. If the link leads to a catalogue without that information, the promise is incomplete. Analyse ecommerce email examples together with their destinations, not just their appearance.

Design a hierarchy that works when people scan

Readers should identify the proposition without deciphering a composition. Order the heading, explanation, image and action around the decision you are helping them make. When several elements compete for priority, check whether the email is trying to solve too many tasks at once.

A photograph can show fit, texture or a usage situation that words alone would struggle to explain. Its role should be clear. Adding images without new information lengthens the journey; removing every image as a rule can remove useful evidence for choosing.

A call to action needs context. “View the size guide” describes a different next step from “Shop the collection”. Both can be offered if useful, but the hierarchy should make clear which serves each need. Not every link needs the same size or prominence.

Review the mobile journey too. A row of products can become a long column; words over an image can become difficult to read when scaled down. Decide the narrow-screen reading order before treating the desktop version as finished.

A brand template that allows different arguments

A useful template brings together reusable rules: typography, spacing, colours, product treatment, buttons and footer. That makes a brand recognisable between campaigns without repeating the same composition. The system should support different content and remain usable when another person prepares a piece.

Define what stays stable and what changes. Footer and sender information often need consistency; opening and content modules should respond to the argument. Email templates provide a starting point, but do not decide what to say.

A maintainable handover preserves editable modules and explains their use. Turning everything into one image means changing a price, translating a paragraph or updating a term requires rebuilding the file. Also agree where approved versions are stored and who maintains brand resources.

Readability, contrast and images with a clear purpose

W3C distinguishes informative, functional and decorative images: alternative text describes information or function; decoration can use empty alt text. Context determines what someone who cannot see the image needs to hear or read.

As a design reference, WCAG specifies minimum contrast of 4.5:1 for normal text and 3:1 for large text. Measuring it identifies weak combinations; it does not certify accessibility for the whole piece.

Check that the proposition and essential terms remain available when images do not load. Keep important content as editable text and test reading order. If an image contains information unavailable elsewhere, decide how to provide an equivalent alternative.

Dark mode and font substitutions can also change the result. Review email clients relevant to your audience and record what you observe. A correct screenshot in one application does not establish identical presentation in every other one.

Check the assembled email as well as the composition

When implementing the design, review links, variables, conditional blocks and images. Personalisation needs defined behaviour when a name or product detail is missing. Test those cases explicitly: the most complete profile does not represent every recipient.

Klaviyo supports previews and test emails with profile or event data. Use examples suited to the message: a general campaign and an order-related email do not necessarily depend on the same information.

Klaviyo warns that Gmail can clip messages based on HTML size; image files are excluded from that calculation. Compressing photos and reducing code are different tasks.

Avoid accumulating hidden modules or duplicated versions without reviewing their cost. Check the sent result and its destinations, especially after adding tracking or changing terms. A useful preview reduces uncertainty but does not replace reviewing the received message.

Approval that supports publishing and continued learning

The final review should bring together design, content and function. In campaign management, the team needs to know which version was approved and what changed afterwards. A seemingly small adjustment can change a condition or break a link.

These criteria help define acceptance of the piece.

• Proposition, products and terms match the confirmed brief.
• Subject, preview text and body provide complementary information.
• Reading order is clear on mobile and essential content remains legible.
• Links describe their destinations and work with final parameters.
• Missing data and language variants have a reviewed fallback.
• The editable piece, resources and approved version are identified.

After sending, use email metrics and customer questions to frame the next change. Do not attribute a sales difference solely to design if audience, offer or season also changed. Keep the hypothesis and context so creative work accumulates learning.

Sources and further reading

• W3C · Text alternatives by image purpose
• W3C · Minimum text contrast
• Klaviyo · Email clipping in Gmail
• Klaviyo · Email previews and tests