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CSS Inliner for Email

Paste HTML with a style block and get every rule moved inline, ready for any inbox.

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How to inline CSS for an email

  1. 01Paste your HTMLKeep your CSS in a style block while you write, like any web page.
  2. 02Check the outputEvery rule is moved onto the elements it matches. Media queries stay in a style block.
  3. 03Copy itPaste the inlined HTML into your email tool, or save it as a template and send it from the API.

CSS inlining questions

Why do emails need inline CSS?

Many inboxes strip or ignore style blocks. Inline styles are the one thing every client reads.

What happens to media queries?

They can’t be inlined, so they stay in a style block for the clients that support them.

Does Templater inline CSS when it sends?

Write templates with inline styles or table layouts for the widest support; the free HTML to email tool inlines on copy.

Is my HTML uploaded?

No. Inlining runs in your browser. Nothing leaves the page.

Send the inlined email from your app.

Save this template in a free workspace and call it from your backend with your data. Same HTML, no manual steps.

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curl -X POST https://templater.nestutils.com/v1/emails/send \
  -H "Authorization: Bearer $TEMPLATER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "template": "invoice-email",
    "to": ["priya@example.com"],
    "data": { "customer": { "first_name": "Priya" } }
  }'

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