HTML Email Check is a preflight validation tool for HTML emails. It analyzes an email’s HTML to identify rendering compatibility issues, structural problems, accessibility concerns, and best-practice compliance, then turns those checks into structured diagnostics with code-level recommendations.
Its feature set includes HTML, CSS, image, link, analytics, spam, accessibility, mobile, font, contrast, dark mode, and viewport validation. The service says it validates HTML markup, structure, and client-specific tags; CSS formatting, inline styles, and client-specific rules; image sources, dimensions, and attributes; URLs, embedded links, and associated attributes; link and pixel tracking setup; anti-spam guidelines; accessibility compliance for assistive technology; mobile compatibility and user experience; font types, web fonts, and client-specific styling; text color contrast; dark mode compatibility and readability; and image clarity, text readability, and accessible tap target sizing. It also includes email-specific development tools for viewing and inspecting email-specific elements, attributes, and values, plus an HTML editor with syntax highlighting, code formatting, and export.
HTML Email Check can send test emails, up to 10 at a time, directly to an inbox, and it checks email deliverability factors including SPF, DKIM, DMARC, MX, BIMI, and blacklist status. The site says it is used by organizations, agencies, and developers worldwide, and describes the product as analyzing emails for structure, compliance, and inbox readiness. It also states that it is delivered with transparent plans, clearly defined features and usage, and no usage limits, hidden quotas, or surprises.
In the Email & SMS campaigns space, HTML Email Check takes a focused approach. It focuses on ensuring HTML emails render correctly and comply with best practices before sending. HTML Email Check is a B2B product aimed at email developers, marketers, QA teams. HTML Email Check follows a freemium model. It runs on the web.
Among its 10 catalogued features are HTML validation, CSS validation, and image validation.
Summary written by a language model from the project’s public pages.
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