How many email templates do I need in Klaviyo?

Most brands need 8 to 12 core templates: a master campaign template, 2 to 3 flow templates (transactional, promotional, content), a product launch template, a sale template, a newsletter template, and a plain text template. From these, you can create variations for specific use cases.

Should I use Klaviyo built-in templates or custom templates?

Start with Klaviyo built-in templates to get up and running quickly. As your brand matures, invest in custom templates that match your brand identity exactly. Custom templates provide better brand consistency and typically outperform generic templates in engagement metrics.

How do I maintain brand consistency across Klaviyo templates?

Create a brand style guide for email that specifies colours, fonts, logo usage, image styles, and button designs. Build all templates from a shared set of design components. Use Klaviyo saved sections to standardise headers, footers, and CTA blocks across all templates.

Can I use custom HTML in Klaviyo templates?

Yes. Klaviyo supports custom HTML blocks within its drag-and-drop builder, and you can create entirely custom HTML templates. Custom HTML gives you full design control but requires email HTML expertise and extensive cross-client testing.

How often should I update my email templates?

Review and refresh your templates every 6 to 12 months. Update them when your brand identity changes, when you add new product categories, or when A/B testing reveals design improvements. Seasonal refreshes for major campaigns like BFCM are also recommended.

Klaviyo Template Library Guide: Building a Scalable Email Design System

Most Klaviyo accounts are a mess of one-off email designs. Every campaign looks slightly different. Flow emails use inconsistent layouts. New team members create emails from scratch because they cannot find a usable template. This wastes time, creates inconsistency, and dilutes your brand.

A template library solves this. It is a curated set of email templates and reusable components that ensure every email your brand sends is on-brand, well-designed, and quick to produce. This guide covers how to build one through our Klaviyo email marketing services.

Why you need a template library

Consistency

Every email should feel like it comes from the same brand. A template library enforces consistent colours, fonts, layouts, and design patterns. Customers learn to recognise your emails at a glance, which builds trust and improves engagement.

Speed

With a template library, creating a new campaign takes minutes instead of hours. Your team selects the appropriate template, swaps in the content, and sends. No design decisions needed for every email.

Quality

Templates ensure that every email meets your design standards. New team members produce the same quality as experienced ones because the structure is pre-built. Mobile responsiveness, accessibility, and rendering are handled by the template.

Benefits of a Klaviyo email template library — A template library ensures consistency, speeds up production, and maintains quality across all emails.

Core templates every brand needs

Campaign templates

Standard campaign — Hero image, body copy, CTA, product grid. Used for most promotional sends.
Product launch — Large hero section, product details, benefit highlights. For new product announcements.
Sale/promotion — Bold discount messaging, urgency elements, featured products. For sales events.
Newsletter/content — Text-heavy layout with editorial content, blog links, and lighter product mentions.
Plain text style — Minimal design that looks like a personal email. High open rates for important announcements.

Flow templates

Transactional — Clean, professional layout for order confirmations and shipping updates.
Promotional flow — Dynamic product content for abandoned cart, browse abandonment, and cross-sell.
Engagement — Content-focused layout for welcome series, brand story, and educational content.

Modular design approach

Build your templates from reusable modules (sections) that can be mixed and matched. Klaviyo's saved sections feature lets you create standardised blocks:

Header module — Logo, navigation links, consistent across all emails
Hero module — Full-width image with overlay text, in two to three variations
Product grid module — Two to four product cards with images, names, prices, and CTAs
Testimonial module — Customer quote with star rating and attribution
CTA module — Prominent button with supporting text, consistent design
Footer module — Social links, unsubscribe, legal text, consistent across all emails

With six to eight modular sections, you can assemble virtually any email your brand needs without designing from scratch. For more on design principles, see our email design best practices guide.

Modular email design system for Klaviyo — Build reusable modules that can be assembled into any email template your brand needs.

Naming conventions and organisation

A template library is only useful if your team can find what they need. Use consistent naming conventions:

[Type] - [Name] - [Version] — Example: Campaign - Product Launch - v2
[Flow] - [Step] - [Variant] — Example: Welcome - Email 1 - Discount

In Klaviyo, use folders or tags to organise templates by type (campaign, flow) and purpose (promotional, educational, transactional). Delete or archive outdated templates to prevent team members from accidentally using deprecated designs.

Version control and updates

When you update a template, do not overwrite the existing version. Instead, create a new version (v2, v3) and update the naming convention. This preserves a record of what was used previously and allows you to revert if a new design underperforms.

Maintain a changelog that records what changed in each version and why. This helps team members understand the evolution of your email design and the reasoning behind current design decisions.

Team workflow for template management

Design handoff

If you work with a web design services team or agency, establish a clear handoff process. The designer creates templates in a tool like Figma, the email developer builds them in Klaviyo, and the team reviews and approves before adding to the library.

Template governance

Designate one person as the template library owner. They approve all new templates, manage updates, and ensure consistency. Without governance, template libraries degrade over time as team members create one-off variations.

Common template mistakes

Too many templates — A library of 50 templates is unmanageable. Keep it to 8 to 12 core templates with modular sections for variation.
No mobile testing — Every template must be tested on mobile devices before being added to the library.
Ignoring email client compatibility — Test rendering in Gmail, Outlook, Apple Mail, and Yahoo. What looks perfect in one client may break in another.
Hardcoded content — Templates should use placeholder content that is clearly meant to be replaced. Avoid accidentally sending a template with placeholder text.
No dark mode testing — Many email clients now support dark mode. Test that your templates look good in both light and dark mode.

Common email template mistakes to avoid — Avoid these pitfalls when building and maintaining your Klaviyo template library.

A well-built template library is an investment that pays dividends every time you send an email. It saves time, ensures consistency, and maintains quality as your team and sending volume grow. Build it once, maintain it regularly, and your email production will be faster and better.

If you want help designing a custom template library for your brand, get in touch. We create template libraries as part of our Klaviyo email marketing services.

Klaviyo Template Library: Building a Scalable Design System