Outlook Email HTML Lint - Classic vs New

Classic Outlook renders with the Word engine, the new Outlook with WebView2. Lint one email file against both at once, line by line, before you send.

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]*style=\"[^\"]*background", "flags": "i", "message": "classic Outlook: classic Outlook ignores a background set on .", "fix": "Wrap everything in a width=\"100%\" table carrying bgcolor.", "sev": "warn"}, {"pattern": "]*role\\s*=)", "flags": "i", "message": "classic Outlook: a layout without role=\"presentation\" is announced as a data table by screen readers.", "fix": "Add role=\"presentation\".", "sev": "warn"}, {"pattern": "'} o.innerHTML=s+'

'+h[i].line+'

'+ String(h[i].msg).replace(/&/g,'&').replace(/

'};

Get one email when this rule changes

We watch the regulation and vendor sources behind Outlook Email HTML Lint - Classic vs New every day. When a rule changes, you get a single email with what changed and the updated check. No newsletter.

Install free

Free for the file open in your editor - no key, no limit. The workspace sweep and the report ask for a key.

npm MCP server (npx)Docker Hub

npx @readystack/outlook-email-html-lint <file>
npx @readystack/outlook-email-html-lint --mcp
docker run --rm -v "$PWD:/w" getreadystack/outlook-email-html-lint /w

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Get the complete version $29

This page is the working piece. The full pack has everything below.

Classic Outlook renders with the Word engine, the new Outlook with WebView2. Lint one email file against both at once, line by line, before you send.

Email on Acid Basics is $99/month and Litmus Core starts at $500/month (checked 2026-09-07).

Buy the full version — $29

EN DE JA ES PT

Outlook Email HTML Lint - Classic vs New

In the full version

Install free

Get the complete version $29

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