Which Should You Use for Headers and Footers?

If you’re building emails in Marketo’s new Email Designer, you’ve likely run into an important question:

Should we use Fragments or Snippets for our header and footer?

At first glance, they seem similar — both allow reusable content across emails. But the way they function behind the scenes is very different. Choosing the right one can impact governance, brand consistency, approvals, and long-term scalability.

Let’s break it down.

What Are Snippets?

Snippets are reusable pieces of content originally designed for the classic Marketo Email Editor. They allow you to insert shared content blocks — such as:

• Legal disclaimers
• Email signatures
• Promotional banners
• Simple HTML content sections

When a Snippet is updated and approved, emails using that snippet must typically be re-approved before sending.

Pros of Snippets

• Simple to use in legacy templates
• Good for short, text-based reusable content
• Allows tighter control if you want updates reviewed per email

Limitations

• Built primarily for the Classic Email Editor
• Less control over layout structure
• Can introduce spacing/rendering inconsistencies
• Requires re-approval of emails after updates

What Are Fragments?

Fragments are designed specifically for Marketo’s new Email Designer. They function as structured, reusable components that can include:

• Full-width headers
• Multi-column layouts
• Background colors
• Images and buttons
• Locked design regions with editable sections

When a Fragment is updated and approved, all emails using it automatically inherit the change — without forcing those emails back into draft.

Pros of Fragments

• Native to the new Email Designer
• Strong layout control and structure
• Supports locked design systems
• Global updates apply instantly
• Emails do not revert to draft after updates

Considerations

• Updates are immediate and global (requires governance discipline)
• Not compatible with the Classic Email Editor

The Key Difference: Governance & Workflow

The biggest distinction between Snippets and Fragments comes down to workflow control.

If your team prefers that any shared content change triggers a fresh email approval cycle, Snippets provide that safeguard.

If you want scalable, modern email architecture with centralized brand control, Fragments are the better long-term solution.

Our Recommendation for Headers & Footers

For organizations using the new Email Designer, Fragments are the clear winner for headers and footers.

Why?

• They preserve layout integrity.
• They prevent Outlook rendering quirks caused by loose HTML insertion.
• They allow you to lock brand elements.
• They support scalable design systems.
• They don’t interrupt your send-ready approval status.

For legal disclaimers that change frequently, some teams choose to isolate those into a separate Fragment for easier compliance updates.

Final Thoughts

Snippets served their purpose well in the Classic Editor era. But in modern Marketo architecture, Fragments are built to support structured, governed, enterprise-ready email programs.

If you’re investing in long-term scalability, consistency, and cleaner rendering — especially across Outlook — Fragments should be your standard for headers and footers.