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Mailgun Inspect

Vendor: Mailgun

Next-generation email QA suite built on the Mailgun platform for pre-send testing, content validation, and deliverability optimization across 100+ clients and devices.

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email Email marketers Email developers Marketing agencies Enterprise brands Large email marketing teams #email-testing #email-rendering #deliverability #email-qa #accessibility-testing #spam-testing

Overview

Mailgun Inspect is the evolved version of Email on Acid, now integrated into the Mailgun platform to manage the full email lifecycle from pre-send checks to high-volume delivery and post-send analysis. The platform provides email previews across 100+ latest clients and devices in under 10 seconds with 99.9% uptime. It includes comprehensive content checks for accessibility (WCAG 2.2), link and image validation, inbox provider compatibility, and spam analysis across major ISPs with B2B/B2C delineation. Security certifications include SOC 2 Type 1, ISO 27001, ISO 27701, and GDPR compliance. Enterprise and white-label solutions with API integration and multi-seat plans are available.

Key Features

Unlimited Email Previews

Test email rendering across 100+ latest email clients and devices with preview results in under 10 seconds.

Campaign Precheck

Automated checks for accessibility (WCAG 2.2), link validation, image optimization, and inbox provider compatibility prior to deployment.

Spam Testing

Content spam analysis across all major ISPs with B2B and B2C delineation to ensure emails reach the inbox.

Email Editor

Integrated tool to build and edit emails with real-time rendering previews.

Advanced Analytics

Data on recipient engagement, geolocation, and device usage for campaign optimization.

Enterprise & White-Label Solutions

Multi-seat plans, custom pricing tiers, and API integration for seamless platform embedding.

Pros & Strengths

  • ✓
    Extensive Client Coverage: Offers a vast range of email clients and devices for testing, ensuring broad compatibility.
  • ✓
    Fast Preview Results: Preview results in under 10 seconds with 99.9% platform uptime.
  • ✓
    Comprehensive Security: SOC 2 Type 1 compliant, ISO 27001 and 27701 certified, GDPR compliant with strict internal controls.
  • ✓
    End-to-End Email Lifecycle: Manages full email lifecycle from pre-send checks to high-volume delivery and post-send analysis in one platform.

Cons & Tradeoffs

  • ⚠
    Cost Considerations: Pricing may be high for users with occasional testing needs or specific feature requirements.
  • ⚠
    Rendering and Speed: Occasional reports of rendering inaccuracies and slow loading times during testing.

Known Limitations

  • • Occasional rendering inaccuracies
  • • Potential for slow loading times

Pricing & Plans

Model: subscription

Pricing includes enterprise and white-label solutions with multi-seat plans and custom pricing tiers. API integration available for platform embedding. Specific tier pricing not publicly disclosed on current pages.

✓ Free Plan ✓ Free Trial

Pricing verified: 2026-08-20

Editorial Info

Last Reviewed: 2026-08-20

Verified Sources & Research

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