Software Alternatives, Accelerators & Startups

DirectoryFast VS InboxStack

Compare DirectoryFast VS InboxStack and see what are their differences

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DirectoryFast logo DirectoryFast

The best directory boilerplate to dominate your niche and become the next listing place to be.

InboxStack logo InboxStack

Email deliverability intelligence with root-cause AI
  • DirectoryFast
    Image date //
    2024-07-03
  • DirectoryFast
    Image date //
    2024-07-03
  • DirectoryFast
    Image date //
    2024-07-03

๐Ÿš€ Introducing DirectoryFast: The Ultimate Directory Boilerplate

Don't just follow trends, dominate them! Launch your own feature-rich directory website in minutes, not months. Perfect for indie hackers and entrepreneurs looking to build the next big listing platform in their niche.

โœจ Key Features: - Built with modern tech (NextJS, TypeScript, Tailwind) - Community tools (ratings, favorites, collections) - SEO optimization - Easy monetization options - Customizable admin dashboard

๐Ÿ”ฅ Early Bird Pricing: $150 off for the first 10 customers (9 left) Already helping 6+ entrepreneurs ship their directory apps!

Ready to start earning with minimal effort? Check out DirectoryFast and harness the power of niche directories today!๐Ÿ‘‰ Learn more:

https://directoryfa.st

  • InboxStack Dashboard
    Dashboard //
    2026-07-20
  • InboxStack Multi ESP Dashboard
    Multi ESP Dashboard //
    2026-07-20
  • InboxStack Multi Client View
    Multi Client View //
    2026-07-20

InboxStack is an email deliverability intelligence platform built for teams who need to know why their emails aren't reaching the inbox โ€” not just that they aren't. At its core is Brain, a proprietary causal AI engine trained on a 22-year deliverability knowledge base, which correlates signals across your ESP, DNS authentication records (SPF, DKIM, DMARC), Google Postmaster Tools, Microsoft SNDS, and 50+ blocklists to pinpoint root causes instead of surfacing raw metrics.

Most deliverability tools stop at monitoring: they show you a drop in inbox placement or a blocklist hit and leave you to investigate. InboxStack goes further, tracing the actual causal chain โ€” a DKIM misalignment, a reputation dip on a specific sending IP, a content trigger โ€” so you can fix the real problem instead of guessing.

Setup takes minutes with no migration required: forward your email headers for an instant DNS/authentication audit, or connect your existing ESP and Postmaster accounts for ongoing monitoring. Optional seed testing gives you real inbox-vs-spam placement data across major providers.

Built for agencies managing multiple client domains and growing companies who've outgrown basic authentication checkers, InboxStack turns deliverability from a black box into a diagnosable, fixable system.

DirectoryFast

$ Details
paid $197.0 / One-off
Platforms
Web
Release Date
2024 May
Startup details
Country
France
Founder(s)
MajorBaguette
Employees
1 - 9

InboxStack

$ Details
freemium $49.0 / Monthly
Platforms
Web
Release Date
2026 May
Startup details
Country
India
State
karnataka
City
Bengaluru
Employees
1 - 9

DirectoryFast features and specs

  • Built with modern tech
    NextJS, TypeScript, Tailwind
  • AI
    List your products from a simple url
  • Community tools
    Ratings, favorites, collections
  • SEO optimization
    Optimized for ranking
  • Easy monetization
    Monetize with affiliates, ads and more

InboxStack features and specs

  • Inboxstack Brain
    Root-cause AI analysis (Brain)
  • Email Audit
    DNS/SPF/DKIM/DMARC authentication audit
  • DMARC Monitoring
    DMARC report monitoring
  • Deliverability Monitoring
    Google Postmaster, SNDS, Senderscore monitoring
  • Blacklist Monitoring
    50+ blocklist monitoring
  • Seed Testing
    Seed testing & inbox placement tracking
  • Warm-up
    Warmup plan and monitor
  • ESP Dashboard
    Multi ESP view dashboard

Category Popularity

0-100% (relative to DirectoryFast and InboxStack)
Developer Tools
100 100%
0% 0
Email Productivity
0 0%
100% 100
Software Directory Submission
Email Deliverability
0 0%
100% 100

Questions & Answers

As answered by people managing DirectoryFast and InboxStack.

What makes your product unique?

DirectoryFast's answer

DirectoryFast stands out with its fully customizable, ready-to-use template, designed for quick launches. It includes built-in monetization features like Featuring Spots, Affiliation links, and Newsletters, making it easy to earn revenue. The template is SEO-optimized for maximum visibility and continuously updated for improvements. Itโ€™s feature-rich, offering Products, Collections, a Dashboard, and Notes, and is a combat-proven solution, stemming from the successful IndiesReadIt directory, which attracts over 2,000 IndieHackers monthly. Its modern tech stack, including NextJs and TypeScript, ensures robustness and scalability.

How would you describe the primary audience of your product?

DirectoryFast's answer

The primary audience is entrepreneurs looking to establish niche directories, ideal for those wanting to launch feature-rich directories quickly without extensive development, focusing on content rather than technical setup.

What's the story behind your product?

DirectoryFast's answer

DirectoryFast was created by Dany, with 12 years of global experience, who settled down to focus on indie hacking. After feeling lost finding the right resources online, Dany built IndiesReadIt over six months, attracting over 2,000 IndieHackers monthly. This experience led to DirectoryFast, designed as an easily usable directory solution for others.

Which are the primary technologies used for building your product?

DirectoryFast's answer

DirectoryFast uses a modern tech stack:

  • Framework: NextJs, TypeScript, TanStack
  • UI/UX: Tailwind, Shadcn/ui, AutoAnimate
  • Payments: LemonSqueezy
  • Login: NextAuth
  • Email: Loops
  • Database: SQL, Prisma

Why should a person choose your product over its competitors?

DirectoryFast's answer

Choosing DirectoryFast offers several advantages:

  • Time-Saving: Save months of development time with a ready-to-use template.
  • Targeted Traffic: Drive relevant visitors to your niche with SEO tools.
  • Monetization: Earn through featured listings, affiliates, and ads.
  • Authority Building: Establish credibility in your niche with a professional setup.
  • Proven Solution: Based on IndiesReadIt, a successful directory.
  • Pricing: Early bird discounts, with Starter at $197 (was $297) and Service at $847 (was $997), 17 spots left.
  • User Feedback: Positive testimonials highlight ease of use and quality.
  • Features: Includes product filters, shareable lists, ratings, notes, and a customizable dashboard.
  • Tech Stack: Modern tools like NextJs, Tailwind, and Prisma ensure scalability.
  • Ease of Use: No senior developer needed; setup in under 10 minutes.
  • Demos: Live examples like Books Demo, LauncheAlternative Demo, UiCentral Demo, Baguette Demo.
  • Support: Comprehensive documentation and personal support from Dany.
  • Market Timing: Directories are trending, as noted by users like Alexander Isora.

Who are some of the biggest customers of your product?

DirectoryFast's answer

Notable customers include Ehi Aig, building a deals directory at TopLifeTimeDeals. There are over 10 early adopters who have launched their directories, as indicated by 13 sales and positive feedback, including users like Sandra Djajic planning directories for Morning Maker Show products.

User comments

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