Folderly VS InboxStack

Compare Folderly VS InboxStack and see what are their differences

Rating: 5.0 · 9 reviews
Pricing: Open source Paid Free trial $120 / Monthly (Folderly Premium)

Rating: 0 reviews
Pricing: Freemium Free trial $49 / Monthly

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Which is more popular?

Based on our record, Folderly seems to be more popular. It has been mentioned 60 times since March 2021.

social mentions: 60 vs 0
Email Marketing popularity: 100% vs 0%
alternatives listed: 240+ vs 10

Base details

Website, pricing, platforms and company facts side by side.

	Folderly	InboxStack
Website	folderly.com	inboxstack.com
Pricing	Open source Paid Free trial $120 / Monthly (Folderly Premium) Official pricing	Freemium Free trial $49 / Monthly Official pricing
Platforms	Google Workspace Office 365 Outlook Yahoo Zoho AWS Sendgrid SendinBlue Mailgun Sendpulse Intercom Klaviyo Sparkpost SMTP API Marketo Elastic Email Rackspace Technology +15	Web
Company	—	Startup from India · 1 - 9 employees · 2026
Listed in	Email Deliverability Email Marketing Platforms Email Marketing SaaS Email Productivity Email Security +3	Email Deliverability Reputation Management Email Warm Up Email Productivity Email +2

About Folderly and InboxStack

In their own words, as submitted to SaaSHub.

Folderly

InboxStack

Folderly is more than just an email deliverability tool. Deep email deliverability fixes, technical setup, access to an up-to-date deliverability score, user-friendly template management, team accounts, and, now, spam trigger detection with best practices to follow—all of these features assist...

Features and specs

What each product offers, as listed by its team.

Folderly 13 features

InboxStack 8 features

Spam Fixing
Email Deliverability Testing
Email Placement Dashboard with Analytics
Technical Setup of Domain DNS and Authentication
Active Domain and IP Monitoring
Content Analysis and Recommendations
Email Templates Management
Spam Triggers
Best Practices
Dynamic Seed Rotation
Custom API Integration
Dedicated Customer Success Manager
Onboarding Support

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

Analysis

An editorial look at what each product does well and who it suits.

Folderly

InboxStack

Overall verdict

Overall, Folderly is a beneficial tool for businesses that rely heavily on email marketing and need to ensure their communications reach their audience's inbox. Its specialized focus on improving email deliverability and providing actionable insights makes it a valuable asset for enhancing email campaign performance.

Why this product is good

Folderly is often regarded as a good tool because it provides efficient email deliverability solutions. It helps businesses improve their email performance by reducing emails going to spam and enhancing inbox placement. This is achieved through features like email warm-up, domain and IP reputation management, and detailed deliverability analytics. Its user-friendly interface and comprehensive reporting tools make it accessible for businesses looking to maximize the efficiency of their email campaigns.

Recommended for

Folderly is recommended for marketers, email campaign managers, and businesses that heavily depend on email as a primary communication tool, especially those who experience issues with emails being marked as spam. It is also suitable for businesses looking to optimize their outreach efforts and improve overall email deliverability rates.

No analysis of InboxStack yet.

Videos

Walkthroughs and reviews on video.

Folderly 5 videos + Add

InboxStack 0 videos + Add

Supercharge Your Email Deliverability With Folderly

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100

Folderly

InboxStack

100% 100%

Email Marketing

0% 0%

Reputation Management

100% 100%

93% 93%

Email Deliverability

7% 7%

92% 92%

8% 8%

User comments

Share your experience with using Folderly and InboxStack. For example, how are they different and which one is better?

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Folderly 5.0 · 9 reviews

InboxStack no reviews yet

Top 14 Email Warm-Up Tools for B2B SaaS
www.mailwarm.com · Dec 2025

Folderly: Full deliverability service offering warm-up, remediation, audits, configuration help, and a managed roadmap for recovery from spam placement.
Folderly guarantees that our emails are delivered to the inbox
SaaSHub review

· Sep 2023

Our field of work requires extensive communication via email; therefore, we needed a solution that would monitor our email deliverability rate and help us eliminate any possible issues causing our emails to land in...
Folderly saves our emails from spam
SaaSHub review

· Aug 2023

With Folderly, we have a clear picture of the situation with our mailboxes, understand what exactly caused our emails to go to spam, and see our campaigns' performance getting better. The team is always ready to give...

We have no reviews of InboxStack yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Folderly 60 mentions

InboxStack 0 mentions

Breaking Into Legal Tech
Make • Build and automate workflows InvoiceBerry • Online invoicing for small businesses Gusto • Payroll, benefits and HR management Hive • Manage tasks, workflows and team’s work Lanva • Social video editing app. ClickUp • Manage... Source: almost 4 years ago
Why do businesses always have such long voice mail greetings?
BTW, the same thing I noticed with emails. I recently started to work with them, and differentiating emails and sending them to the right group of people brings a more positive outcome. We recently checked it on https://folderly.com/.... Source: about 4 years ago
Is there somewhere an email client for mac that is not gmail, implements labels and supports IMAP?
Finally, I would suggest you also use https://folderly.com/ in addition to those two email clients. I would help you avoid making your emails spammy and maintain a high email deliverability score. It’s essential if you’re using email for... Source: about 4 years ago

Tracking InboxStack since Jul 2026.

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Email warmup tool to avoid spam folder, since 2020 - Backed by Email Deliverability Experts

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