Proven to boost engagement by 344%

Emails that get opened - personalized template images that lift CTR

Turn one branded template into personalized banners, dynamic images, and embedded visuals tailored to each subscriber

Your subscriber's name Background image

Edit the fields above to see the templated image update instantly with different campaign data

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Personalized demo image
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No credit card required

Works with 99% of email service providers

Mailchimp Klaviyo SendGrid AWeber MailerLite Smartlead Instantly Zoho

Personalize every email, effortlessly

Your subscribers are more than just a list - they're individuals. Generic, mass-produced emails are easy to ignore and quickly forgotten. With OKZest, you can transform your email campaigns into a powerful tool for connection and engagement.

Our platform makes it simple to design one branded template, then personalize visually stunning emails with merge tags, ESP data, or API-driven workflows. We'll help you boost open rates, drive more clicks, and build a loyal audience that feels seen and valued.

Works with 99% of email service providers

These are just some of the companies OKZest works with.

  • AWeber
  • Instantly
  • Klaviyo
  • Mailchimp
  • Mailerlite
  • Sendfox
  • Smartlead
  • UChat
  • Zoho

Examples of images you could use to increase engagement

Email marketers AutoFlow Campaign Workflow
Email marketers Black Friday Countdown Banner
Email marketers CleanSend Interface Design
Email marketers E-commerce Success Strategy
Email marketers Email Performance Banner
Email marketers EventSend Concert Highlight
Email marketers GrowList Success in Miami
Email marketers InboxGuard Notification Banner
Email marketers Liam's Campaign Success
Email marketers MailMasters Webinar Alert
Email marketers Maximize Email ROI
Email marketers NextGen Mail Banner
Email marketers NicheMail Marketers Banner
Email marketers OnboardPro Welcome Banner
Email marketers Personalized Email Success
Email marketers PersonalizePro Banner Design
Email marketers PromoMail Offer Banner
Email marketers ReMail Re-engagement Campaign
Email marketers Sophia's Sales Insights
Email marketers Split Screen Email Banner
Email marketers Summer Sales Boost Banner

Two ways to use OKZest

No-code

Visual design tool

For account managers, marketers, and designers who need to launch client campaigns fast. Build templates, preview personalization, and go live without touching code.

  • Easy to use image editor
  • Real-time personalization preview
  • Pre-built templates to start fast
  • Works with the tools you already use
Try the design tool
</> API

Image personalization API

For developers who need programmatic control. Integrate personalized image generation directly into internal tools, products, or automated workflows.

  • REST API with full documentation
  • Programmatic image generation at scale
  • MCP support
View API docs
Why OKZest

The results speak for themselves

Personalized visuals consistently outperform generic ones. OKZest makes it easy to create them at scale.

344% higher engagement

Campaigns using personalized images see dramatically higher open rates, click-throughs, and conversions versus generic sends.

Proven result
No developer required

The visual design tool lets marketers create and launch personalized image campaigns without writing a single line of code.

Marketer-friendly
Seamless integration

Drop a single image URL into any email. OKZest handles the personalization - your ESP handles the send. No workflow changes needed.

Works in minutes
Real-time personalization

Images update dynamically when opened - so the content is always current, even if the email was sent days ago.

Live data
Analytics & insights

Track image opens, clicks, and engagement so you can see exactly which personalized images are driving results.

Data-driven
Built for teams

Workspaces, roles, and shared asset libraries keep your team aligned on brand - whether you're an agency or an in-house team.

Collaborative
How it works

Up and running in minutes

No complex setup. No developer handoffs. Just personalized images in your next campaign.

1
Design your template

Use the drag-and-drop editor to create an image template. Add text layers for the subscriber's name, company, or any merge tag.

2
Copy

OKZest generates a single image URL that includes your merge tags. Paste it into your email campaign like any other image.

3
Send

Your ESP sends the email as normal. When each subscriber opens it, they see an image personalized specifically for them.

What customers say

"The no-code image personalization was incredibly easy to set up. Our team had it running for a client campaign without any developer help."

Aisha Carter
CRM & Email Specialist

"Being able to update images even after you've sent them is genuinely useful. No more outdated content in old emails across campaigns. Game-changer."

Carlos Rivera
Head of Marketing

"The image personalization API integrates seamlessly into our existing workflow. Setup took less than an hour and results were immediate."

Ruth Emmel
Email Marketing Manager

Getting started

OKZest is a platform that lets businesses generate personalized images dynamically - embedding each recipient's name, company, website screenshot, or any other data directly into an image in real-time. It's used across email marketing, newsletters, social media, websites, chatbots, certificates, and more.

Higher engagement: Personalized images capture attention and have been shown to significantly increase click-through rates compared to generic images.

Time savings: OKZest automates the creation of thousands of unique images - no manual editing or design work needed per recipient.

Consistent branding: Every image is generated from your template, so your brand design stays consistent across every touchpoint.

You build an image template in OKZest's editor, adding merge tags wherever you want personalized content - text, foreground images, or background images. OKZest generates the image the moment a recipient views it, injecting their data in real-time.

The image embeds into your email or web page as a standard <img> tag, so it works with any platform that supports HTML images:

<img src="loadImageUrl?c=ABC123&i=XYZ456&name=*[FNAME]*" />

Merge tags can be in any format to match your email service provider - e.g. *[FNAME]* for Mailchimp, {{first_name}} for others. You can also set a default fallback value for when a variable is missing.

Sign up for a free account - no credit card needed. You'll get 2,500 generated images per month to try the service. Once you're in, create a design, add your merge tags, copy the image URL, and drop it into your email or webpage. See our documentation for a step-by-step guide.

Yes - the free plan includes 2,500 generated images per month, forever. No time limit, no credit card required. Free plan images include a watermark to indicate they're for testing. When you're ready to go live, upgrade to a paid plan to remove the watermark and increase your image limit.

Yes - this video shows a full end-to-end walkthrough: building an image template, adding merge tags, and using the image in a Mailchimp email campaign.

Features

Anywhere that renders an HTML <img> tag works with OKZest. That includes: email campaigns, newsletters, blogs, websites, chatbots, CRM platforms, certificates, social media posts, Shopify stores, WordPress, Microsoft SharePoint, and SAP Portal.

If your platform supports dynamic images or merge tags in <img> src attributes, OKZest will work with it.

Because merge tags can be entered in any format, OKZest works with virtually any platform that supports dynamic images. Tested and confirmed providers include: Weber, Instantly, Klaviyo, Mailchimp, MailerLite, SendFox, Smartlead, UChat and Zoho.

Don't see yours listed? It almost certainly works - contact us to confirm.

OKZest supports both static content and dynamic merge tags. Dynamic data can come from any source - your email service provider, a CRM, a database, an API, or even URL parameters. Anything your sending platform can pass as a query parameter can be merged into the image in real-time.

Yes. OKZest includes team functionality with role-based access - Administrators, Designers, Finance contacts, and Clients each have appropriate permissions. Clients can be given read-only access to designs so they can review and give feedback without being able to edit.

Performance & security

Images are generated the moment a recipient's email client or browser requests them. Generation adds less than half a second to the overall download time - fast enough that recipients won't notice any delay.

OKZest runs on cloud infrastructure built to generate millions of personalized images per day. Whether you're sending hundreds or millions of emails, the platform handles it without any configuration changes on your end.

OKZest uses industry-standard encryption for all data in transit and at rest. We follow strict privacy policies and never share user data with third parties. Two-Factor Authentication (2FA) is available for all accounts to protect against unauthorized access.

Ready to boost your
email engagement by 344%?

Join thousands of businesses already delivering personalized experiences that convert. Free to start, no credit card needed.