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About

InboxStack is an email deliverability intelligence platform built around Brain, a proprietary causal AI engine that identifies why emails miss the inbox — not just that they did. Most deliverability tools stop at monitoring: they show a drop in inbox placement or a blocklist hit and leave you to investigate. InboxStack goes further, correlating signals from your ESP, DNS authentication records (SPF, DKIM, DMARC), Google Postmaster Tools, Microsoft SNDS, and 50+ blocklists through a causal knowledge graph built on a 22-year deliverability knowledge base — tracing the actual root cause, whether it's a DKIM misalignment, IP reputation dip, or content trigger. Onboarding starts with forwarding your email headers for an instant DNS/auth audit, no migration required. Teams that want ongoing monitoring can connect their ESP and Postmaster accounts, with optional seed testing for real inbox-vs-spam placement data. Built especially for digital agencies and ESP's.

About

On average, 30% of emails fail to reach their target by dropping straight into customers' spam folders. Reclaim this lost revenue with the most advanced email deliverability system available. The SendForensics Deliverability Score is a unique, predictive modeling of an email's ability to reach any given inbox. To put it simply, it is a measure of an email's 'quality' in terms of how it will be perceived by global filtering-systems/ISPs and even human recipients themselves. Truly the Missing Metric. From email content, to the sending infrastructure, reputation, engagement-history, external feeds (such as Microsoft SNDS*) and more, SendForensics EDS automatically sifts through the datasets to present the biggest cause(s) for concern at every analysis.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Any comapny who sends emails or manages email campaigns

Audience

Companies that want to improve email deliverability

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

$49/month
Free Version
Free Trial

Pricing

$49 per user per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

InboxStack
Founded: 2025
India
inboxstack.com

Company Information

SendForensics
Founded: 2011
Singapore
www.sendforensics.com

Alternatives

Alternatives

Everest

Everest

Validity

Categories

Categories

Integrations

Gmail
GreenRope
Microsoft Outlook
Playable
Yahoo! Mail

Integrations

Gmail
GreenRope
Microsoft Outlook
Playable
Yahoo! Mail
Claim InboxStack and update features and information
Claim InboxStack and update features and information
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