Domain Reputation Checker by Truelist vs Unabyss for Claude
Side-by-side comparison of features, pros & cons, pricing, and community votes (2026).
🏆 Unabyss for Claude leads with 654 upvotes

Is your domain blacklisted? Find out in seconds, free
Domain Reputation Checker by Truelist is a straightforward, no-cost online tool designed to quickly assess the reputation status of any domain. Ideal for email marketers, deliverability specialists, and IT professionals, it offers instant insights into whether a domain is blacklisted across major spam and email reputation lists. Beyond blacklist status, it provides detailed reports on SPF and DMARC configurations, mail infrastructure health, and assigns a letter grade with actionable recommendations for improvement. What sets this tool apart is its simplicity and speed—users can get comprehensive domain health reports without any sign-up or technical hurdles, backed by Truelist’s extensive experience validating over a billion emails. It’s a valuable resource for maintaining high email deliverability, protecting sender reputation, and troubleshooting potential issues before they impact campaigns or communication channels.
Pros
- Free, no sign-up required for instant reports
- Comprehensive domain reputation analysis including blacklist status and email configuration
- Provides actionable fixes and a clear letter grading system
- Backed by Truelist’s expertise with over 1 billion emails validated
- Suitable for marketers, IT teams, and deliverability professionals
Cons
- Lacks advanced features like historical tracking or in-depth analytics
- Limited to basic reputation checks—does not offer ongoing monitoring
- No integration options with other tools or platforms
Best for
- • Quickly verifying if a domain is blacklisted before sending a campaign
- • Diagnosing deliverability issues with email infrastructure
- • Ensuring compliance with SPF and DMARC policies
- • Pre-emptively checking new or rebranded domains for reputation risks
Pricing: Free to use with no sign-up required, providing instant domain reputation reports. No paid plans or premium features are explicitly mentioned, making it a completely free tool for basic checks.

Shared memory across all apps and LLMs. In Claude
Unabyss for Claude is a groundbreaking tool designed to enhance the capabilities of AI language models by offering shared memory across multiple applications and LLMs. It allows Claude to access and recall context from various sources like email, Google Drive, GitHub, Notion, and meeting recordings, creating a unified memory that improves AI interactions and productivity. Unlike traditional integrations that require manual wiring of each app, Unabyss automates the process, ensuring Claude stays updated with all relevant information in real-time. This results in more accurate, context-aware responses that truly understand your business and personal workflows. Perfect for teams and individuals seeking seamless AI collaboration, Unabyss makes AI smarter, more private, and portable by maintaining a persistent, secure memory foundation that follows users across different platforms and tools.
Pros
- Creates a unified, persistent memory for multiple AI tools and apps
- Automates integration process, saving setup time and effort
- Enhances AI contextual understanding for more accurate responses
- Supports privacy and data security with private memory storage
- Portable memory that follows users across platforms
Cons
- Potential complexity in setup for non-technical users
- Limited information on pricing and plans at this stage
- Dependence on third-party app integrations which may vary
Best for
- • Improving AI-driven customer support with contextual history
- • Enhancing project management with shared knowledge across tools
- • Streamlining developer workflows by syncing code repositories and notes
- • Personalized AI assistants that remember user preferences and history
Pricing: Likely operates on a freemium model with free access and paid plans that increase storage or feature limits, typical for SaaS productivity tools, though specific details are not yet publicly available.