Cap
lightweight, modern open-source CAPTCHA
Folderly
Make the inbox your only destination folder
Updated February 2026
| Cap | Folderly | |
|---|---|---|
| Rating | 5.0★ | 5.0★ |
| Reviews | 1 | 48 |
| Pros | 0 | 17 |
| FactScore™ | 15.1 | 84.5 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Cap — Pros
No unique pros listedBoth tools — Pros
—Only in Folderly — Pros
Email deliverability User-friendly interface Spam prevention Comprehensive solution Robust features Customer support Email outreach optimization Email spam words checker DNS settings management Increased open rates AI-driven approach Best practices recommendations Blacklist monitoring Spam trigger detection Email infrastructure analysis Real-time monitoring Simple setupOnly in Cap — Cons
—Both tools — Cons
—Only in Folderly — Cons
—Details
| Cap | Folderly | |
|---|---|---|
| Categories | Safety and Privacy platforms | Email marketing, Marketing automation platforms, Safety and Privacy platforms, AI Infrastructure Tools |
| Platforms | Web | Web |
| Became Popular | April 21, 2025 | November 26, 2020 |
| Website | capjs.js.org | folderly.com |
Who Should Pick Which?
Choose Cap if...
- No unique pros listed
Choose Folderly if...
- Email deliverability
- User-friendly interface
- Spam prevention
With a FactScore™ of 15.1 vs 84.5, Folderly leads in community reception. Cap uniquely offers No unique pros listed, while Folderly stands out for Email deliverability and User-friendly interface.
What Users Say
Cap
I was very pessimistic about this product—at some point, I thought it wouldn’t help at all. Now I’m happy. It just stopped the spam (registration attempts and contact form submissions) Good job!
Folderly
I think Folderly is truly changing the game in the email deliverability industry, leaving warmup solutions in the dust 😍 It's more than diagnosing and applying a "patch." This solution fixes deliv...
I've been here since the early days of Folderly, witnessing its growth and development. With our ever-evolving platform, we're now proud to have helped hundreds of clients! Our Customer Success tea...
Proper email deliverability prepares and maintains the entire email infrastructure. Google Startups Fund backs Folderly to create a comprehensive deliverability solution. This includes managing dom...
Related Comparisons
Frequently Asked Questions
Which is better, Cap or Folderly?
Based on FactScore™, Folderly leads with a score of 84.5 vs 15.1. Folderly has a higher rating of 5.0★ compared to 5.0★.
What are the pros of Cap compared to Folderly?
Cap uniquely offers: No unique pros listed.
What are the pros of Folderly compared to Cap?
Folderly uniquely offers: Email deliverability, User-friendly interface, Spam prevention, Comprehensive solution, Robust features.
Is Cap better rated than Folderly?
Cap is rated 5.0★ from 1 reviews. Folderly is rated 5.0★ from 48 reviews.
What is the FactScore™ of Cap and Folderly?
FactScore™ weighs rating and review volume together. Cap scores 15.1 and Folderly scores 84.5.
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