Proven to boost engagement by 344%

Donor appeals that resonate - personalized templates that increase gifts

Create compelling visuals for fundraising campaigns, donor appreciation, reports, and social media from one branded template using supporter data

Your subscriber's name Background image

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

Personalized demo image
Start for free

No credit card required

Works with 99% of email service providers

Mailchimp Klaviyo SendGrid AWeber MailerLite Smartlead Instantly Zoho

Build deeper connections with every supporter

Your mission is powerful, but in a crowded digital world, it can be a challenge to make your message stand out. Your donors, volunteers, and advocates are the heart of your organization, and building a personal connection with each one is essential for long-term support.

OKZest is here to help. Design one branded template in our no-code editor, then send visually engaging, personalized emails using donor, volunteer, or event data. By using dynamic content in your communications, you can increase donations, drive event sign-ups, and foster a loyal community dedicated to your cause.

With OKZest, you can:

  • Create dynamic, personalized email content from one reusable template in seconds.
  • Automatically tailor messages using donor data such as names, donation amounts, and event participation history.
  • Strengthen relationships with supporters and increase engagement across every campaign, whether you stay no-code or extend the same templates through the API.

Examples of images you could use to increase engagement

Non profit org AdSphere Campaign Offer
Non profit org Build a Playground
Non profit org ChildHope Sponsorship Gratitude
Non profit org Clean Water Banner
Non profit org Doctors Saving Lives
Non profit org Double Your Donation
Non profit org Eco Gift Banner
Non profit org Ethan's Appreciation Banner
Non profit org HopeFund Charity Banner
Non profit org Chicago Volunteer Weekend
Non profit org Join KindHearts Circle
Non profit org Laura's 85 Milestone
Non profit org Liam's Impactful Donation
Non profit org Meals4Hope Food Drive
Non profit org ReliefAid Emergency Support
Non profit org Rescue Puppy Banner
Non profit org Sophia Gala Invitation
Non profit org Sophia Memorial Banner
Non profit org Sponsor Summer Camp
Non profit org TeachHope School Donation
Non profit org Urgent Fundraising Countdown

Strengthen relationships with supporters and increase engagement across every campaign.

1. Personalize Your Fundraising Emails

  • Tailor emails to each donor, including their name, previous contributions, or the specific cause they supported. Show them they matter.

2. Boost Volunteer Recruitment

  • Send targeted invitations to new or existing volunteers. Use dynamic content to match your opportunities with their preferences or past involvement.

3. Enhance Event Invitations

  • Generate visually stunning and personalized event invitations. Include attendees’ names, event details, and even real-time updates for RSVPs.

4. Automate Thank-You Messages

  • Create heartfelt thank-you emails with personalized images to show your appreciation to donors, sponsors, or volunteers - without extra manual work.

5. Build Long-Term Relationships

  • Deliver meaningful updates on your projects, share impact stories, and tailor your newsletters to your supporters’ interests.

Relevant articles

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: AWeber, 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.

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Free plan includes 2,500 images/month