
OUR SERVICES
Email Template Development - Renders Everywhere
Email HTML is notoriously brittle, what looks perfect in Gmail can break completely in Outlook 2019.


OUR SERVICES
Email HTML is notoriously brittle, what looks perfect in Gmail can break completely in Outlook 2019.

Tell us what you are building - what exists today, what it has to do and when it has to be live. We come back with the questions we need answered and a scoped estimate instead of a range.
EXPERTISE
OUR APPROACH
Choose the cooperation format that best fits your business goals and development velocity.
Fast launch to test your idea and gather user feedback with minimal investment.
What's included
Timeline Typically 9-16 weeks
Complete cycle from initial strategy and design to final launch.
What's included
Timeline Typically 20-40 weeks
Scale your team with expert developers to accelerate development.
What's included
Timeline Flexible / Long-term
OUR PROCESS
We specialize in creating user-centered & innovative solutions. Delivering seamless digital experiences.
EXPERT INSIGHTS
MJML compiles to responsive email HTML that works in 90+ clients. Hand-coding email HTML is expert-level work that rarely justifies the effort.
Responsive out of the box
MJML components compile to MSO-conditional comments for Outlook and flex for modern clients.
10× faster development
Write semantic components - no manual table-based layout hacking.
Battle-tested rendering
MJML-compiled HTML is tested against 90+ email clients in their compatibility matrix.
React-MJML integration
mjml-react lets you build dynamic transactional emails with component props.
Maximum control
Every byte of HTML is intentional - no generated code overhead.
No dependency
No build step - edit and send directly from your ESP.
Smaller file size
Minimal HTML can be smaller than MJML-compiled output.
Expert-level precision
Experienced email developers can fine-tune Outlook quirks manually.
EXPERT GUIDANCE
Brand Fidelity
Exact pixel-level implementation of your design system.
Reusability
Component library - build once, compose into any template.
Dynamic Content
Full templating (Handlebars, Liquid, JSX props) for personalization.
Rendering Testing
Integrate Litmus or Email on Acid in CI for cross-client testing.
Version Control
Git-tracked HTML files - code review, branching, and history.
Best For
Transactional emails, brand-critical campaigns, multi-ESP deployment.
Brand Fidelity
Constrained to ESP component library - may not match brand guidelines.
Reusability
Templates per ESP - not portable between Mailchimp and HubSpot.
Dynamic Content
Merge tags - limited logic and conditional block support.
Rendering Testing
Some ESPs include preview - others require Litmus add-on.
Version Control
ESP internal versioning - limited rollback capability.
Best For
Small teams, simple campaigns, non-technical marketers.
Feature
Custom HTML (MJML / React Email)
ESP Drag-and-Drop Builder
DELIVERABLES
Design File
Figma email design reviewed for email client constraints before a single line of code is written.
HTML Email Code
Table-based, inline-CSS HTML built to MJML or hand-coded standards for maximum compatibility.
Dark Mode Support
Media query and prefers-color-scheme handling so the template looks intentional in dark mode.
Cross-Client Testing
Litmus or Email on Acid test report showing renders across Gmail, Outlook, Apple Mail, and mobile.
ESP Integration
Template imported and configured in your ESP (Klaviyo, HubSpot, Mailchimp, or custom platform) with variable tags.
Modular Block Library
Reusable content blocks (hero, text, button, image, footer) so your team builds new campaigns fast.
INDUSTRIES
We build powerful digital experiences across various sectors, ensuring your product meets unique market demands.
Data-driven commerce solutions that improve journeys, boost sales, and optimize operations.
Data-driven commerce solutions that improve journeys, increase sales, and optimize operations.
Reliable medical platforms that protect patient data, simplify workflows, and support clinical accuracy.
Product-driven platforms that enhance workflows, automate processes, and scale with your business.
CASE STUDIES
START YOUR PROJECT
Expert developers ready to deliver high-quality digital products.
INSIGHTS

Thirteen Ukrainian app development companies, each named with a link to its own site and described only from what that site claims. Alphabetical, no scores, no prices. Kultrix is one of the thirteen.
2026-08-26

What an app costs and how long it takes, in hours: a mobile base is 320-520 hours, all fifteen modules from 40-90 to 150-340 hours, and a plan built on 18 focused hours a week.
2026-08-24

How to choose a software development agency: what to ask, what to ask them to show, and how to compare two proposals by stripping the rates out and reading the hours.
2026-08-24
FAQ
Email clients use wildly inconsistent rendering engines. Outlook on Windows uses Microsoft Word's rendering engine, which supports almost no modern CSS. Gmail strips certain styles. Apple Mail is relatively modern but handles dark mode differently. This means email HTML requires table-based layouts, inline CSS, and constant cross-client testing - techniques that have not been used in web development since 2005.
We test across 90+ clients and environments using Litmus or Email on Acid, including: Gmail (web, iOS, Android), Apple Mail (macOS, iOS), Outlook 2016-2021 on Windows and Mac, Yahoo Mail, Samsung Email, and a representative set of mobile email clients in both light and dark mode.
Yes. Dark mode is supported natively in Apple Mail, Samsung Email, and Gmail on Android. We implement prefers-color-scheme media queries and Outlook-specific dark mode overrides to ensure your template looks intentional - not accidentally inverted - when recipients use dark mode.
Yes. We work in Klaviyo, HubSpot, Mailchimp, ActiveCampaign, Iterable, Braze, Salesforce Marketing Cloud, and custom platforms. We import templates, configure variable merge tags, set up dynamic content blocks, and test sending so templates are immediately ready for use by your marketing team.
MJML is an open-source email framework that compiles to responsive, battle-tested HTML. It dramatically reduces the time required to write email code and produces consistently compatible output. We use MJML for most new email template projects and hand-code only when maximum control over the output HTML is required.
Yes. We replicate your brand typography, colors, spacing, and component styles within the constraints of what email clients support. We provide a Figma design review early in the project that flags any design elements that cannot be reliably rendered across all target clients, and propose email-safe alternatives.
Projects range from a single transactional template to a full suite of 15-20 templates covering welcome, nurture, promotional, transactional, and re-engagement use cases. We recommend starting with a master template and modular block library, then deriving individual campaign templates from that foundation.
A single template - design, build and testing across the major clients including Outlook and dark mode - is a small, well-understood job, so we quote a fixed date and price once we see the design rather than publishing a range here. A library of ten or more templates takes 4-8 weeks, depending on how far the designs differ from each other. Rush delivery for a single template is available for an additional fee.
Yes. We deliver templates that your marketing team can edit through your ESP's drag-and-drop editor for common content changes. For teams who want to edit the raw HTML, we provide documentation covering which sections are safe to modify and which table-based layout elements should not be touched to avoid rendering breakage.
Yes. We can provide email copywriting alongside template development. Our copywriters specialize in transactional email copy, promotional campaigns, and automated lifecycle sequences. We deliver both the design-coded template and the copy ready to send - or we can build templates with placeholder copy for your team to fill in.
Yes. We perform email template audits that identify rendering failures, accessibility issues (poor color contrast, missing alt text, unlabeled CTAs), and code quality problems. We then fix issues, retest, and deliver updated templates alongside a short report explaining what was wrong and how it was corrected.
Yes. We follow email accessibility best practices: semantic heading structure, descriptive alt text on all images, minimum 4.5:1 color contrast ratio, sufficiently large tap targets on mobile, and logical reading order for screen reader users. Accessible email is also better email - clear, structured content improves conversion rates for all recipients.