HTML email uses markup to present styled text, links, lists, and images inside the message. Plain-text email is unformatted text displayed as written. A well-built message often sends both in one multipart/alternative email: the plain version first and the HTML version last, so each recipient’s mail program can use the richest representation it supports.
HTML email and plain-text email: the direct difference
The distinction is about the message body, not the subject line, sender, or delivery system.
Plain text
Under the MIME definition in RFC 2046, text/plain contains text without formatting commands, font specifications, processing instructions, or content markup. A recipient’s software displays the characters as text. You can still use line breaks, spacing, capitalization, and carefully written URLs, but the message does not contain instructions to render a heading in a particular font or an image inside the body.
HTML
HTML email uses markup to describe presentation and structure. Outlook’s documentation lists fonts, colors, lists, and pictures as examples of what HTML messages can show. HTML also supports descriptive link text, headings, tables, buttons, and other layout techniques, subject to the receiving client’s capabilities and settings.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteHTML is not a guarantee that every recipient will see the same design. As Microsoft notes, how a message appears depends on the recipient’s email program and its settings. A client may remove styles, block images, simplify the layout, or offer a plain-text view.
HTML vs. plain text at a glance
| Question | Plain text | HTML |
|---|---|---|
| Formatting | Characters and line breaks only; no formatting commands or markup. | Markup can specify structure and presentation such as fonts, colors, lists, and images. |
| Links | Usually shown as the full URL or descriptive text followed by a URL. | Can use descriptive anchor text such as “Read the release notes.” |
| Images in the body | Cannot display an in-message image as a visual element. | Can include images, although the client may block or alter them. |
| Rendering | Generally straightforward, but wrapping, character encoding, and line length still depend on the client. | More dependent on the recipient’s program, settings, supported HTML, and image behavior. |
| Accessibility | Can be clear and accessible when the text is logically ordered and understandable. | Can be accessible when structure, contrast, link text, image alternatives, and attachments are implemented correctly. |
Neither format is automatically accessible. Accessibility comes from the content and implementation. Official guidance emphasizes understandable structure, legible presentation, and equivalent text for meaningful images; the recipient’s software and settings also affect the result.
Why email often contains both versions
MIME’s multipart/alternative container lets one message carry alternate representations of the same information. RFC 2046 specifies that composing agents should put body parts in increasing order of preference: the plainest version first and the richest version last. A capable recipient should display the last representation it can handle.
A typical structure looks like this:
Content-Type: multipart/alternative; boundary="mail-boundary">--mail-boundaryContent-Type: text/plain; charset="UTF-8"Your account report is ready.Read it: https://example.com/report--mail-boundaryContent-Type: text/html; charset="UTF-8"Your account report is ready.
--mail-boundary--The two parts should communicate the same substantive message. RFC 9787 discusses why this matters: a client’s capabilities or configuration may be uncertain, so either representation could become the one a person reads. Do not put an important instruction, deadline, link, or warning only in the HTML part.
When to choose HTML, plain text, or both
Use HTML when visual structure adds meaning
- A newsletter needs headings, grouped sections, or a clear reading hierarchy.
- A product update benefits from descriptive links, a table, or an illustrative image.
- An invitation or transactional notice needs a prominent action link and scannable information.
- The message includes meaningful images that you can describe with equivalent text.
Keep the HTML purposeful. A button should still have a clear text equivalent, and decorative styling should not hide the actual instruction.
Rank #2
![Free Fling File Transfer Software for Windows [PC Download]](https://m.media-amazon.com/images/I/41Vq6ZqHfjL._SL160_.jpg)
- Intuitive interface of a conventional FTP client
- Easy and Reliable FTP Site Maintenance.
- FTP Automation and Synchronization
Use plain text when the message is already straightforward
- A short personal note needs no visual treatment.
- A support or engineering message consists of instructions, logs, or code-like text.
- The recipient or environment is known to prefer text-only messages.
- You are communicating where predictable, low-complexity rendering matters more than visual presentation.
Plain text is not a promise of better delivery or better accessibility. It is simply a representation without markup.
Send both for broad distribution
For a mixed audience, create semantically equivalent text/plain and text/html parts. Put plain text before HTML in the MIME entity and make the HTML part the richer, last alternative. If a client cannot or will not render HTML, it can use the plain part without losing the message’s substance.
Accessibility details that apply to either format
Write for meaning before appearance
Use a logical order, explicit wording, and link text that explains the destination. Do not make color, font styling, or an image the only way to understand an instruction. In plain text, use headings and spacing consistently; in HTML, use structural elements and a layout that remains understandable when styles are reduced.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Provide equivalent text for meaningful images
If an image conveys information, include an equivalent text alternative. A decorative image should not be treated as the message itself. Remember that recipients may block images or use a client that presents them differently.
Make attachments accessible
An attachment should be accessible in its own right, or accompanied by an accessible alternate version. A visually polished HTML wrapper does not make an inaccessible document usable.
Rank #3
Check the recipient’s environment
Mail applications, account settings, and security policies can change appearance. Test the message with the clients and settings your audience actually uses, and inspect the plain-text part separately rather than assuming the HTML fallback will be chosen exactly as you expect.
A practical workflow for authoring a two-part message
- Write the source content. List the purpose, required action, links, dates, and image meaning in ordinary language.
- Draft the plain-text part. Preserve the same order and information. Use readable line breaks and write out destinations when the URL itself is useful.
- Build the HTML part. Add headings, lists, descriptive links, and images only where they improve comprehension. Supply text alternatives for meaningful images.
- Compare the parts. Confirm that every substantive claim, action, warning, and link appears in both versions.
- Package them as
multipart/alternative. Puttext/plainfirst andtext/htmllast, with a correct boundary and character encoding. - Review real rendering. Check a client that renders HTML, a text-only view, image-blocked conditions, and any mobile layout used by your audience.
Does plain text have better deliverability?
There is no universal conclusion here. The authoritative format and accessibility guidance establishes how HTML, plain text, and multipart/alternative work; it does not establish that plain text always reaches inboxes more successfully than HTML. Treat deliverability as a broader engineering question involving authentication, reputation, consent, content, sending practices, and recipient systems rather than promising an advantage from format alone.
PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchPreviewing a hosted email layout
If your team publishes an HTML email as a web preview, you can inspect that public URL in a browser before sending. A screenshot can reveal a broken layout or missing image, but it does not replace checking the actual MIME parts and text-only view.
Or skip the browser setup
ScreenshotNeo can capture a hosted preview with one request. Its cleanup step accepts cookie or consent banners and removes more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each step can be disabled. Bot checks, CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and response headers identify the page verdict and billing status. An MCP server provides take_screenshot, get_page_info, and capture_pdf tools for Claude, Cursor, and other MCP clients. The Free plan includes 1,000 screenshots per month without a card; paid plans start at $5 for 3,000 screenshots. Use a public preview URL, not a private mailbox URL.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/email-preview -o shot.webpimport requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://example.com/email-preview"}, timeout=90)
open("shot.webp", "wb").write(r.content)const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://example.com/email-preview' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);See the ScreenshotNeo documentation for request options. Create a free account to get 1,000 screenshots a month with no card.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common mistakes and fixes
The plain-text part omits a button or warning
Cause: The HTML was treated as the source of truth. Fix: Compare both parts from a content checklist and add the same action, destination, and warning to plain text.
Rank #4
The HTML looks different in another client
Cause: Email programs and settings support different rendering behavior, and images or styles may be blocked. Fix: Simplify the layout, keep essential meaning in text, and test the clients that matter to your audience.
Recipients see raw tags
Cause: The message was labeled or encoded incorrectly, or the MIME boundaries are malformed. Fix: Verify the Content-Type declarations, boundary markers, character encoding, and that the HTML is inside the text/html part.
A meaningful image conveys no information
Cause: The image was supplied without an equivalent text alternative, or it was blocked. Fix: State the same information in nearby text or an appropriate alternative, and do not make the image the sole carrier of the message.
FAQ
Is HTML email the same as an attached web page?
No. HTML is included as a MIME message part and is interpreted by the recipient’s email software, which may support only a subset of web behavior.
Recommended Free Tools
Can a recipient force a text-only view?
Some mail programs and settings can choose or display a plain representation, while others may render HTML by default. Because behavior varies, the plain part must stand on its own.
Best Value
Should every HTML email contain an image?
No. Add an image only when it contributes useful information or context, and provide equivalent text for that meaning.
Frequently Asked Questions
Is multipart/alternative two separate emails?
No. It is one MIME message containing alternate representations of the same content; the receiving client chooses the version it can render.
What should I do if I only have time to write one version?
Write clear plain text first. Add HTML when visual structure genuinely helps, then keep the two versions semantically equivalent.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →The Bottom Line
Plain text is unformatted content; HTML adds structured presentation. For most broad-audience messages, send both as multipart/alternative, with plain text first and equivalent HTML last, and judge accessibility by the quality of the content rather than the format label.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
