Use the visual editor to build your email banner. Add text layers for recipient name, offer, and headline. Add image layers for product photos or avatars. Mark each as dynamic with an API name.
Use RenderStack's REST API from your email service or embed a GET URL directly in your email HTML. Pass merge tags as query parameters — the image renders when the email is opened.
Each recipient sees a banner personalized to them — their name, their offer, their product recommendation. One template, unlimited unique renders, no manual work.
Embed a render URL directly in your email HTML. The image generates when the recipient opens the email — no server-side API calls needed at send time.
Map your ESP's merge tags (like {{first_name}} or {{offer_code}}) directly to RenderStack query parameters for seamless integration.
Rendered images are cached automatically. Repeat opens serve the cached version instantly without re-rendering, keeping load times fast.
If a recipient's data is missing — no profile photo, no product image — fallback chains provide graceful defaults without breaking the layout.
<img
src="https://api.renderstack.io/v1/render/email-banner?api_key=rs_get_xxx&name.text={{first_name}}&offer.text={{discount_code}}&product.src={{product_image_url}}"
alt="Personalized offer for {{first_name}}"
width="600"
height="200"
/>Design one banner template. Render a unique version for every recipient. No design tools, no manual exports — just dynamic images at send time.
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