Handlebars in Marketing Cloud Next: The Spring '26 Guide for SFMC

The Spring '26 release of Salesforce Marketing Cloud Next marks a turning point for SFMC teams: for the first time, a true industry-standard templating language — Handlebars — lands in the platform. Gone are the days of juggling AMPscript, Guide Template Language, and SSJS to personalize an email; Handlebars becomes the reference language for conditional logic, loops, and data lookups. If you're still operating on Marketing Cloud Engagement, this change will affect you soon. Here's what you need to understand — and how to prepare your team for the transition.

Why Salesforce is bringing Handlebars to Marketing Cloud Next

Handlebars is a battle-tested templating syntax, used for more than a decade in the JavaScript ecosystem. By bringing it into Marketing Cloud Next, Salesforce clears three hurdles at once.

First, unification. Marketing Cloud Engagement carried three scripting languages depending on context: AMPscript for emails, Guide Template Language for some legacy CloudPages, and SSJS for Automation Studio. That technical debt slowed onboarding for new marketers and complicated code sharing across teams. Handlebars, already used in Marketing Cloud Personalization, becomes the common foundation.

Second, the ecosystem. Handlebars has an active community, plentiful documentation, and a parser broadly compatible with modern tools — including AI agents that can now generate and audit personalization code reliably. That's a decisive point: the Agentforce Campaign Creation and Content Builder agents released in Spring '26 emit Handlebars, not AMPscript.

Third, governance. Marketing Cloud Next wraps Handlebars in a system of template locking and controlled sharing. In practice, a developer can publish a template with an editable region, and a marketer can swap the content without breaking the underlying logic.

AMPscript vs Handlebars: the key differences

For teams fluent in AMPscript, here's the mapping of the essential concepts.

Need	AMPscript	Handlebars (MC Next)
Insert a variable	`%%FirstName%%`	`{{firstName}}`
Condition	`%%[ IF @v=="x" THEN ... ]%%`	`{{#if v}}...{{/if}}`
Loop	`%%[ FOR @i=1 TO ... ]%%`	`{{#each items}}...{{/each}}`
Data Extension lookup	`Lookup()`	`{{lookup ...}}`
Date formatting	`FormatDate()`	`{{formatDate ...}}`
HTML escaping	Manual via `HTMLEscape()`	Automatic (use triple `{{{ }}}` to opt out)

The most structural difference is automatic HTML escaping. In AMPscript, forgetting an HTMLEscape() call on user-submitted data opened the door to injections. Handlebars escapes variables by default — an immediate security win.

Handlebars syntax basics

Three constructs cover 90% of real use cases. First, interpolation:

Hello {{firstName}},

Your order {{order.id}} shipped on {{formatDate order.shippedAt "yyyy-MM-dd"}}.

Second, conditional logic:

{{#if subscriber.isVip}}
  <p>Thanks for your loyalty — here's 15% off.</p>
{{else}}
  <p>Welcome! Here's your welcome code.</p>
{{/if}}

Third, iteration over a collection:

<ul>
{{#each cart.items}}
  <li>{{this.name}} — {{formatCurrency this.price "USD" "en-US"}}</li>
{{/each}}
</ul>

Note the implicit this context inside a {{#each}} loop. Handlebars also handles nested contexts via {{../parent}}, which simplifies access to higher-level variables.

Native Marketing Cloud Next helpers

Salesforce ships Handlebars with a library of helpers tailored to the marketing context. Here are the ones you'll reach for daily.

Formatting

{{formatDate order.date "yyyy-MM-dd"}}
{{formatCurrency product.price "USD" "en-US"}}
{{uppercase firstName}}
{{truncate description 120}}

Lookups and data sources

{{#lookup "ProductCatalog" "Sku" subscriber.lastSku}}
  {{this.Name}} — {{formatCurrency this.Price "USD" "en-US"}}
{{/lookup}}

Advanced logic

{{#if (and subscriber.optIn (gt order.total 50))}}
  <p>You qualify for free shipping.</p>
{{/if}}

The classic migration mistake: replicating AMPscript's verbosity by chaining nested {{#if}} blocks. Handlebars lets you compose conditions with and, or, eq, gt — lean on these helpers to keep templates readable, testable, and maintainable.

Three concrete use cases

1. Dynamic product block for an abandoned-cart email

{{#if (gt cart.items.length 0)}}
  <h2>You left {{cart.items.length}} item(s) in your cart</h2>
  {{#each cart.items}}
    <div class="item">
      <img src="{{this.imageUrl}}" alt="{{this.name}}">
      <h3>{{this.name}}</h3>
      <p>{{formatCurrency this.price "USD" "en-US"}}</p>
    </div>
  {{/each}}
{{/if}}

2. Segment-based conditional personalization

{{#switch subscriber.segment}}
  {{#case "vip"}}
    <p>Exclusive access to our new collection.</p>
  {{/case}}
  {{#case "lapsed"}}
    <p>It's been a while — here's −20% on your next order.</p>
  {{/case}}
  {{#default}}
    <p>Discover this week's new arrivals.</p>
  {{/default}}
{{/switch}}

3. Recommendations from Data Cloud

{{#dataCloud "recommended_products" subscriberId=subscriber.id limit=3}}
  <div>
    <a href="{{this.url}}">{{this.name}}</a>
    <span>{{formatCurrency this.price "USD" "en-US"}}</span>
  </div>
{{/dataCloud}}

This {{#dataCloud}} helper illustrates the convergence between Marketing Cloud Next and Data Cloud: recommendations from the personalization engine can be injected directly into the template, with no manual REST call and no Data Extension join required.

Best practices for migrating from AMPscript

A successful migration isn't a find-and-replace job. Here are five principles proven on our Marketing Cloud Next transition projects.

First, map your existing code before rewriting. Listing every active AMPscript block (Content Builder, Email Studio, CloudPages) helps you identify recurring patterns and prioritize the Handlebars helpers worth standardizing for your team.

Second, build a partials library. Handlebars supports partials — reusable fragments — via the {{> partialName}} syntax. It's the modern equivalent of AMPscript Content Blocks, but with real versioning and cross-Business-Unit sharing.

Third, test with real data. Marketing Cloud Next exposes a preview mode that renders the template against a real subscriber profile and traces every exception. Systematically document your edge cases: null fields, empty lists, non-normalized values.

Fourth, govern custom helpers. If you build your own helpers, centralize them in a versioned repo with unit tests and code review. That's the difference between an industrialized SFMC team and a patchwork of hard-to-maintain scripts.

Fifth, plan for coexistence. For 12 to 24 months, your Engagement and Next tenants will live side by side. Set a clear rule: every new template ships in Handlebars on Next; legacy AMPscript templates stay in place until a planned refresh cycle.

Key takeaways

Handlebars becomes the standard templating language of Marketing Cloud Next from Spring '26, progressively replacing AMPscript and Guide Template Language.

Automatic HTML escaping and the rich set of native helpers (formatDate, lookup, dataCloud) secure and simplify email personalization.

Migrating from AMPscript requires upfront mapping, a partials library, and strict governance of any custom helpers.

Engagement and Next will coexist: simple rule — every new template in Handlebars, legacy AMPscript templates kept until a planned refresh.

The Spring '26 AI agents (Campaign Creation, Content Builder) now emit Handlebars code aligned with your library — a real accelerator for tooled-up teams.

Preparing the move to Marketing Cloud Next or assessing the impact of Spring '26 on your SFMC roadmap? Contact the CGC-Agency team for an audit of your AMPscript estate and a Handlebars migration plan tailored to your organization.