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Description

Pinpoint email issues before you hit "send". On average 51% of emails never reach the inbox! So where do they go? 26% go to spam or junk folder and 25% are never delivered. We have every tool you need to maximize inbox deliverability. Get a report of any potential delivery issues with your outgoing messages. Audit your sending IP and Domain against 50+ industry blacklists. Monitor, capture, separate, and reject any email pretending to be you. Track if your content or IP is blocked by Gmail, Yahoo!, or other ISPs. Identify “risky” content and clean HTML errors to ensure delivery. Run automatic tests and get notified about issues when they occur. Get notified if deliverability issues occur by email, Slack, or Telegram. You can book a 1-hour consulting call with one of our expert consultants and get all of your email marketing & deliverability questions answered. Large enterprises can opt for our comprehensive Email Deliverability Audits.

Description

InboxStack is an innovative platform focused on email deliverability intelligence, centered around its unique causal AI engine named Brain, which uncovers the underlying reasons why emails fail to reach the inbox rather than merely indicating their failure. Unlike many other deliverability tools that only monitor issues, such as a decrease in inbox placement or blocklist entries, InboxStack takes a deeper approach by analyzing signals from various sources, including your ESP, DNS authentication records (SPF, DKIM, DMARC), Google Postmaster Tools, Microsoft SNDS, and over 50 blocklists, all through a sophisticated causal knowledge graph derived from two decades of expertise in email deliverability. This comprehensive analysis helps pinpoint the actual root causes of delivery issues, whether they stem from DKIM misalignment, a decline in IP reputation, or specific content triggers. The onboarding process is streamlined, requiring only the forwarding of your email headers for an immediate DNS/auth audit, and no migration is necessary. For teams seeking continuous monitoring, there is the option to link their ESP and Postmaster accounts, with the added possibility of seed testing to obtain authentic data on inbox versus spam placement. Designed specifically for digital agencies and email service providers, InboxStack equips users with the tools they need to enhance their email deliverability with confidence and precision. Additionally, the platform's user-friendly interface and extensive support resources ensure that teams can easily navigate and utilize the full range of features available.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

Screenshots View All

No images available

Integrations

Gmail Yes 
Yahoo! Mail Yes 
Amazon SES Yes 
Mailchimp Yes 
Mailgun Yes 
Microsoft Outlook No 
SendGrid Yes 
Slack Yes 
SpamAssassin Yes 
Telegram Yes 

Integrations

Gmail Yes 
Yahoo! Mail Yes 
Amazon SES No 
Mailchimp No 
Mailgun No 
Microsoft Outlook Yes 
SendGrid No 
Slack No 
SpamAssassin No 
Telegram No 

Pricing Details

$9 per month
Personal accounts are FREE. Uptime Monitor Basic accounts start as low as $9 /mo. Save 25% on all annual subscriptions.
Free Trial No 
Free Version Yes 

Pricing Details

$49/month
Free Trial Yes 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person Yes 

Vendor Details

Company Name

GlockApps

Founded

2009

Country

United States

Website

glockapps.com/

Vendor Details

Company Name

InboxStack

Founded

2025

Country

India

Website

inboxstack.com

Product Features

Email Deliverability

DMARC Analytics Yes 
Deliverability Alerts Yes 
Deliverability Reporting Yes 
Email Address Verification Yes 
Email Content Testing Yes 
Email Previewing Yes 
IP Blacklist Monitoring Yes 
Inbox Placement Testing Yes 
Reputation Reporting Yes 

Email Marketing

A/B Testing Yes 
Artificial Intelligence No 
Auto-Responders No 
CAN SPAM Compliance Yes 
Customer Surveys No 
Drip Campaigns No 
Dynamic Content No 
Event Triggered Email No 
Image Library No 
Landing Pages/Web Forms No 
Mailing List Management No 
Mobile Optimized Emails No 
Reporting/Analytics Yes 
Subscriber Management No 
Template Management No 
WYSIWYG Email Editor No 

Email Testing

A/B Testing Yes 
Accessibility Testing Yes 
DMARC Analytics Yes 
Deliverability Rates Yes 
HTML Validation Yes 
IP Blacklist Checking Yes 
Improvement Recommendations Yes 
Pre-Send Email Testing Yes 
Preview Across Browsers & Devices Yes 
Reporting / Analytics Yes 
Sender Reputation Scoring Yes 
Spam Testing Yes 

Product Features

Email Deliverability

DMARC Analytics No 
Deliverability Alerts No 
Deliverability Reporting No 
Email Address Verification No 
Email Content Testing No 
Email Previewing No 
IP Blacklist Monitoring No 
Inbox Placement Testing No 
Reputation Reporting No 

Alternatives

Alternatives