Core features included in all subscription plans.
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HTML Validation
Validation of your email's HTML markup, structure, and client-specific tags, with reporting on critical issues, unsupported elements, and recommended improvements for reliable rendering consistency across all major email clients.
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CSS Validation
Validation of your email’s inline CSS and client-specific styles, with reporting on unsupported declarations, rendering inconsistencies, and recommended improvements for consistent presentation across diverse email platforms and devices.
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Image Validation
Validation of all embedded images, supported formats, and required attributes, with reporting on unreachable resources, optimization concerns, and compliance with technical standards for reliable cross-client rendering.
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Link Validation
Validation of all hyperlinks, ensuring reachability, correct protocols, and required attributes, with reporting on dead links, unsupported parameters, and compliance issues affecting click tracking and rendering consistency across clients.
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Font Validation
Validation of all font usage and web font compatibility, confirming fallback strategies and supported families, with reporting on rendering issues, coverage gaps, and improvements for consistent text readability in emails.
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Email DevTools
Dedicated inspection and debugging workspace. Renders your message in an isolated frame with DOM picker, breadcrumbs, raw-HTML extraction, attributes, computed styles, and email-specific checks.
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HTML Editor
Integrated HTML editor linked to validation results, with syntax highlighting, auto-formatting, and inline error reporting, enabling efficient review, debugging, and correction of technical issues identified during validation.
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Email Deliverability
Validation of domain authentication and DNS configurations, including SPF, DKIM, DMARC, MX, BIMI, and blacklist checks, with reporting on detected issues and recommended fixes to improve email deliverability.
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Pre-Send Checklist
Validation workflow ensuring emails and campaigns meet compliance, rendering, and deliverability standards, with reporting on outstanding issues and confirmation that all key requirements are satisfied before deployment.
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Advanced features included in business and enterprise subscription plans.
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Spam Validation
Validation of HTML, content, and readable text against known spam heuristics and filters, with reporting on critical triggers, scoring metrics, and recommended optimizations to reduce email spam classification risk.
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Mobile Validation
Validation of your email’s mobile rendering and responsiveness, confirming required attributes and layouts, with reporting on sizing issues, and improvements to optimize mobile-first user experiences.
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Email Sending
Validation feature enabling unlimited test sends directly to inboxes, with reporting on rendering quality, authentication results, and previews that replicate recipient experiences across multiple client environments.
Find out more - Download Reports Export functionality to save validation results, with detailed analysis, and issue-specific guidance, ensuring comprehensive documentation for audits, quality control, and internal review processes.
Expert features included in enterprise subscription plans.
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Analytics Validation
Validation of all analytics tracking, confirming pixel functionality and link query parameters, with reporting on misconfigurations, and compliance issues that affect reliable measurement of engagement.
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Contrast Audit
Validation of color contrast across text, buttons, and links, with reporting on accessibility compliance, readability metrics, and recommended improvements to ensure optimal visibility in diverse client displays.
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Dark Mode Audit
Validation of dark mode rendering across clients, with simulation of color inversions, reporting on visibility issues, and recommendations to maintain consistent readability and branding in dark environments.
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Viewport Audit
Validation of viewport scaling and responsive design compliance, with reporting on text readability, image resolution, and tap target sizing, ensuring accessible, mobile-optimized layouts across devices and platforms.
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Accessibility Validation
Validation of accessibility compliance, confirming support for screen readers, semantic markup, and ARIA attributes, with reporting on deficiencies and improvements to ensure inclusive communication across all audiences.
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Dedicated Email Repair
Enterprise clients with yearly plans gain access to our dedicated developers, who will provide specialized technical assistance and email development support. This allows for direct collaboration with our in-house email experts, focusing on diagnosing rendering inconsistencies, optimizing HTML and CSS for client compatibility, and ensuring adherence to industry-recognized coding standards.
Email repair requests are available up to four times per year, typically once every four months, and cannot be accumulated or transferred. This schedule ensures ongoing access to expert support at regular intervals, allowing teams to plan iterative improvements throughout the year. By maintaining consistent engagement, organizations benefit from proactive issue detection, continuous refinement of their email templates, and a measurable increase in deliverability, compatibility, and user experience quality.
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