HTML Email vs. Plain Text: When to Use Each

Published July 5, 2026

An old debate that still matters

“Should this be an HTML email or plain text?” is one of the oldest questions in email — and it still comes up on every campaign. HTML email gives you design, branding, and buttons. Plain text gives you simplicity, reliability, and a personal feel. Each has real strengths, and choosing the wrong one for the job costs you engagement.

The short answer is that it depends on the email’s purpose. The better answer, which we’ll get to, is that you rarely have to choose only one.

What each format actually is

HTML email is a web-page-like document — formatted text, images, colors, buttons, and multi-column layouts. It’s what most marketing email looks like: designed, branded, and visual. Building it reliably is genuinely hard because of how inconsistently email clients render HTML (see Why Outlook, Gmail, and Apple Mail Render Differently).

Plain text email is exactly that — text, with no formatting, images, links styled as buttons, or layout. It looks like a personal message typed into your mail app. It renders identically everywhere because there’s nothing to render.

The case for HTML email

HTML is the right choice when presentation drives the outcome:

• Branding and recognition. Your logo, colors, and fonts make the email unmistakably yours. See branding.
• Visual hierarchy. Headlines, images, and buttons guide the eye and make the key message and action obvious. See Email Design Best Practices.
• Clear calls to action. A prominent, tappable button converts better than a bare URL for most marketing goals.
• Rich content. Product grids, newsletters, and announcements need layout that plain text can’t provide.
• Measurable engagement. HTML supports tracked links and open pixels, so you can measure performance.

The trade-off is complexity: HTML email has to be built carefully to render across clients, stay under Gmail’s size limit, and remain accessible.

The case for plain text

Plain text wins when authenticity and reliability matter more than design:

• It renders perfectly everywhere. No client quirks, no dark-mode surprises, no clipped messages.
• It feels personal. A plain-text note reads like a message from a human, not a marketing department — which is exactly right for founder notes, one-to-one outreach, and simple transactional confirmations.
• It’s lightweight and fast. Nothing to load, nothing to block.
• It sidesteps image blocking. With no images, there’s nothing for a client to hide.

The trade-off is that plain text can’t brand, can’t lay out content visually, and offers no button or reliable open-tracking.

Why the best answer is “both”

Here’s the part that resolves the debate: a well-formed email doesn’t have to be one or the other. The email standard supports a multipart message that carries both an HTML version and a plain-text version in the same send. The client shows whichever it prefers — almost always HTML, with plain text as the fallback.

Including a plain-text alternative alongside your HTML has real benefits:

• Deliverability. Spam filters tend to look more favorably on messages that include a plain-text part; an HTML-only email can be a mild negative signal.
• Fallback coverage. The handful of clients, devices, or reader settings that prefer text still get a clean, readable version.
• Accessibility. A good plain-text version is inherently easy to read and screen-reader friendly.

So the practical rule is: design in HTML, but ship a plain-text alternative with it.

When to lean plain

Even with multipart as the default, some emails are genuinely better as plain (or plain-forward):

• Founder or personal notes meant to feel one-to-one.
• Simple transactional confirmations where a code or a short instruction is all that matters.
• Internal or low-stakes messages where design would be overkill.

For everything with a brand, a layout, or a call to action — newsletters, launches, onboarding, announcements — HTML (with a plain-text alternative) is the way to go.

How Temway fits in

Temway is built for the HTML side of this — a visual, drag-and-drop builder that renders every design into responsive, cross-client-safe HTML. When you export an email, you get the production-ready HTML to send, and a matching plain-text version is generated alongside it, so you can ship a proper multipart message without writing the text version by hand.

From there, push the email to your ESP or paste the HTML into any sending tool — Temway is a builder and exporter, so it hands off clean HTML and plain text for your provider to deliver. To go deeper on the HTML side, start with Building Your First Email.

Where to go next

• Build the HTML version with Building Your First Email.
• Understand the HTML rendering challenges in Cross-Client Rendering.
• Keep the HTML version deliverable in Why Gmail Clips Your Emails.
• See what the export produces in the export and HTML guide.