Fact Checker AI Humanizer New Community Pricing Tools Directory New

Folderly

Make the inbox your only destination folder

★★★★★ 5.0/5
FactScore™ 84.5
VS

Knock

Customer engagement infrastructure for product-led growth

★★★★★ 5.0/5
FactScore™ 30.1

Updated February 2026

Folderly Knock
Rating 5.0★ 5.0★
Reviews 48 3
Pros 17 13
FactScore™ 84.5 30.1

FactScore™ Comparison

FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.

👑
84.5
Folderly FactScore™
★ Folderly wins on FactScore™
30.1
Knock FactScore™

Pros & Cons

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 setup

Both tools — Pros

—

Only in Knock — Pros

Cancelling notifications Complex notification workflows Developer first platform Easy-to-use API Excellent documentation GUI for notification flows In-app notification feed Out-of-the-box integrations Reliable Responsive support Scheduling notifications Smooth workflow Templating

Only in Folderly — Cons

—

Both tools — Cons

—

Only in Knock — Cons

Lack of automated testing support Lack of declarative workflow definition

Details

Folderly Knock
Categories Email marketing, Marketing automation platforms, Safety and Privacy platforms, AI Infrastructure Tools Email marketing, Marketing automation platforms, Unified API, AI Infrastructure Tools
Platforms Web Web
Became Popular November 26, 2020 March 17, 2022
Website folderly.com knock.link

Who Should Pick Which?

Choose Folderly if...

  • Email deliverability
  • User-friendly interface
  • Spam prevention

Choose Knock if...

  • Cancelling notifications
  • Complex notification workflows
  • Developer first platform

With a FactScore™ of 84.5 vs 30.1, Folderly leads in community reception. Folderly uniquely offers Email deliverability and User-friendly interface, while Knock stands out for Cancelling notifications and Complex notification workflows.

3

What Users Say

Folderly

S
Sofiia Nov 20, 2023
★★★★★

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...

D
Dariia Nov 6, 2023
★★★★★

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...

M
Michael Nov 7, 2023
★★★★★

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...

Knock

V
Van Mar 17, 2022
★★★★★

Knock is a very easy-to-use API that makes adding all sorts of user notifications to your application a breeze. The GUI for adding notification flows is nicely designed and the documentation is wel...

I
Ilya Mar 17, 2022
★★★★★

I've been using Knock while it was in beta for a few months now, and was actually very impressed! Implementing notifications from scratch can be very difficult, and I was pleasantly surprised by ho...

A
Andrew Mar 17, 2022
★★★★★

Been using Knock for the past few months in their closed beta for SwayDM. It's been so easy to make changes to some of our more complex notification workflows. It really is a developer first platfo...

Frequently Asked Questions

Which is better, Folderly or Knock?

Based on FactScore™, Folderly leads with a score of 84.5 vs 30.1. Folderly has a higher rating of 5.0★ compared to 5.0★.

What are the pros of Folderly compared to Knock?

Folderly uniquely offers: Email deliverability, User-friendly interface, Spam prevention, Comprehensive solution, Robust features.

What are the pros of Knock compared to Folderly?

Knock uniquely offers: Cancelling notifications, Complex notification workflows, Developer first platform, Easy-to-use API, Excellent documentation.

Is Folderly better rated than Knock?

Folderly is rated 5.0★ from 48 reviews. Knock is rated 5.0★ from 3 reviews.

What is the FactScore™ of Folderly and Knock?

FactScore™ weighs rating and review volume together. Folderly scores 84.5 and Knock scores 30.1.

Don't Get Fooled by Fake Social Media Videos

The world's first fact checker for social media. Paste any link and get an instant credibility score with sources.

Try FactCheckTool Free