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Web & HTML Email Developer
Klaviyo Specialist

I create responsive HTML email templates that work flawlessly across all email clients. Experienced with Klaviyo platform and cross-client testing for optimal deliverability.

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David Gutierrez
HTML Email Developer
Los Angeles, CA

About Me

I'm an Web & HTML Email Developer with expertise in creating responsive email templates and Klaviyo automation. With 14 years of healthcare experience, I bring precision, attention to detail, and the ability to work under pressure to every project.

I specialize in hand-coded HTML/CSS email development, ensuring perfect rendering across Gmail, Outlook, Apple Mail, and 30+ other email clients. My focus is on clean, maintainable code and optimal user experience.

Key Skills

  • Responsive Web Design
  • Responsive Email Design
  • Hand-coded HTML/CSS Email Templates
  • Klaviyo Platform Experience
  • Cross-Client Testing (Litmus)
  • Email Accessibility Standards
  • Version Control (Git)
  • Python/Flask Development
  • WordPress Development

Tech Stack

HTML5 icon
HTML
CSS3 icon
CSS
CSS3 icon
javascript
CSS3 icon
Python
Figma icon
Figma
Klaviyo email platform icon
Klaviyo
Litmus email testing icon
Litmus

SAAS

Minty Email

HTML Email Tester

MintyEmailTester.com

I created this as an alternative to Litmus Putsmail as Litmus will be retiring this feature September 30 2025. Full-stack email testing application built with Python Flask backend and responsive HTML/CSS frontend. Enables businesses and marketers to test HTML email campaigns by sending HTML with inline CSS to multiple recipients for inbox compatibility testing. Features automated CSS inlining to ensure proper email client rendering, form validation, and email delivery tracking. Implements Flask routing for form processing, server-side email composition with SMTP integration, and responsive template design. Deployed on Render cloud platform with custom domain configuration, SSL certificates, and production-ready hosting infrastructure.

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Email Marketing Website

Minty Email

Email Marketing Agency 🍃

MintyEmail.com

Email marketing consultancy website targeting small to medium-sized businesses and e-commerce brands. Focuses on helping business owners seeking fresh strategies to increase sales through custom HTML campaigns, automated sequences, and responsive template design. Specializes in Klaviyo automation setup, segmentation, and custom template integration.

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Full Stack

Minty Email

Electronic Medical Records

Full Stack

Tech Used: Python, Flask, Jinja, HTML, CSS

Comprehensive Electronic Medical Records system built with Python/Flask that manages provider/patient registration, generates medical reports, integrates ICD-10/CPT coding databases, handles workers' compensation forms, and creates complete patient charts with document management capabilities.

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HTML EMAIL PROJECTS

Each project is a unique piece of development 🌿

Bike shop promotional email template preview

Promotional Email 🎣

Fishing Gear

Promotional email for Piscifun showcasing a limited-time offer on fishing gear.

Live Demo Code
Shinola promotional email template preview

Promotional Email

Shinola

Promotional Email Shinola. Friends & Family Sale.

Live Demo Code
Re-engagement email template preview

Re-engagement Email 🔁

Bike Shop

Re-engagement email for a bike shop, encouraging inactive customers to return.

Live Demo Code
Cart abandonment email template preview

Cart Abandonment Email 🛒

Bike Shop

Cart abandonment email for a bike shop, reminding customers of items left in their cart.

Live Demo Code
Bike shop promotional email template preview

Promotional Email 🔔

Bike Shop

Promotional email for a bike shop, showcasing a limited-time offer on cycling gear.

Live Demo Code
Back-in-stock email template preview

Back In Stock Email 🔙

Bike Manufacturer

This HTML email alerts customers when a previously out-of-stock product becomes available for purchase.

Live Demo Code
Newsletter email template preview

Newsletter Email 📰

Tea Shop

Newsletter email for a tea shop, featuring the latest products and promotions.

Live Demo Code
Transactional email template preview

Transactional Email 💳

Tea Shop

Transactional email for a tea shop, confirming a recent purchase.

Live Demo Code
Welcome email template preview

Welcome Email 🥳

Tea Shop

Welcome email for a tea shop, introducing new customers to the brand.

Live Demo Code