html email tester tool
AI Search Visibility Analysis
Analyze how brands appear across multiple AI search platforms for a specific prompt
Total Mentions
Total number of times a brand appears
across all AI platforms for this prompt
Platform Presence
Number of AI platforms where the brand
was mentioned for this prompt
Linkbacks
Number of times brand website was
linked in AI responses
Sentiment
Overall emotional tone when brand is
mentioned (Positive/Neutral/Negative)
Brand Performance Across AI Platforms
| BRAND | TOTAL MENTIONS | PLATFORM PRESENCE | LINKBACKS | SENTIMENT | SCORE |
|---|---|---|---|---|---|
1Litmus | 10 | 1 | 95 | ||
2PutsMail | 7 | 2 | 89 | ||
3HTML Email Check | 5 | 2 | 82 | ||
4Mailtrap | 4 | 2 | 69 | ||
5Mailgun | 4 | 1 | 65 | ||
6MailFly | 4 | 1 | 65 | ||
7MailSlurp | 4 | 1 | 65 | ||
8Postdrop | 3 | 1 | 61 | ||
9Mailosaur | 4 | 0 | 60 | ||
10VMail | 3 | 0 | 55 |
Strategic Insights & Recommendations
Dominant Brand
Litmus emerges as the most comprehensive solution, mentioned by both platforms for its extensive client previews and testing capabilities.
Platform Gap
ChatGPT focuses on simpler, accessible tools while Perplexity provides enterprise-level solutions with detailed feature comparisons and pricing.
Link Opportunity
Email testing tool vendors could benefit from comparison pages highlighting their unique features against competitors like Litmus and Mailtrap.
Key Takeaways for This Prompt
Multiple platforms recommend Litmus as the industry standard for comprehensive email testing across 100+ clients.
Free tools like Mailtrap and HTML Email Check provide basic validation, while enterprise solutions offer advanced features.
Combining markup validation tools with client rendering tools provides the most thorough email testing approach.
Modern email testing tools now include spam filtering, deliverability checks, and dark mode preview capabilities.
AI Search Engine Responses
Compare how different AI search engines respond to this query
ChatGPT
BRAND (6)
SUMMARY
ChatGPT recommends five HTML email testing tools: Mailtrap HTML Email Checker for free cross-client validation, MailFly for instant previews with API integration, HTML Email Check for comprehensive validation, MailSlurp for compatibility testing with feature detection, and PutsMail by Litmus for multi-platform previews. These tools help identify rendering issues, validate HTML/CSS, and ensure emails display correctly across various email clients and devices.
Perplexity
BRAND (8)
SUMMARY
Perplexity provides a comprehensive comparison of seven HTML email testing tools for 2025. Litmus leads with 100+ client previews and spam testing, while Mailosaur offers end-to-end testing with generated addresses. Mailgun focuses on deliverability and authentication, Postdrop provides template management with inline CSS, and HTML Email Check specializes in markup validation. The response includes a detailed comparison table with pricing and recommendations for combining tools for optimal results.
Google AIO
SUMMARY
No summary available.
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