Related Products
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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.
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About
Mailwarm : Automated Email Warmup & Deliverability Software
Mailwarm is a cloud-based email warmup and deliverability platform designed to help businesses improve inbox placement and reduce spam filtering risks. Since 2020, Mailwarm has supported startups, sales teams, recruiters, agencies, and outbound marketers that rely on cold email and domain reputation management for growth.
The platform strengthens sender reputation by generating consistent, natural engagement signals across multiple mailbox providers. Instead of relying on shortcuts, Mailwarm builds long-term trust with email providers through structured warmup automation.
Mailwarm supports Gmail, Outlook, Microsoft 365, Yahoo, and custom SMTP configurations, making it suitable for teams launching new domains, onboarding new sales representatives, or managing multiple client inboxes.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Any comapny who sends emails or manages email campaigns
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Audience
Users searching for a powerful Email Warmup Tool to avoid landing in spam
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
$49/month
Free Version
Free Trial
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Pricing
$69 per month
Unlimited emails/day
Unlimited accounts & SMTPs Unlimited Users Deliverability expert tailored engagement Success Manager Free Deliverability Audit
Free Version
Free Trial
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Reviews/
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Reviews/
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Pros & Cons from Real UsersPros
Cons
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationInboxStack
Founded: 2025
India
inboxstack.com
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Company InformationMailwarm
Founded: 2020
France
www.mailwarm.com
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Categories |
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Integrations
Gmail
Microsoft Outlook
Yahoo! Mail
AOL Mail
Amazon SES
Google Workspace
Mailgun
Microsoft 365
SendGrid
Zoho Mail
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Integrations
Gmail
Microsoft Outlook
Yahoo! Mail
AOL Mail
Amazon SES
Google Workspace
Mailgun
Microsoft 365
SendGrid
Zoho Mail
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