ColdStackColdStack.co
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PipefireM&B Marketing
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Related Products
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About
Stop losing deals in the 2-hour window between lead reply and your response. ColdStack brings every cold email reply from Instantly, Smartlead, and EmailBison into a single Slack channel where your team can see and act instantly.
Each reply triggers a real-time notification with full engagement context—who opened what, when, and how many times. Your team replies directly from Slack, and ColdStack syncs everything back bidirectionally to your source platform. No more toggling between dashboards, Gmail, and Slack.
Built for cold email agencies and sales teams who live in Slack. Mobile-ready through Slack's app.
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About
Pipefire is a managed cold-email outreach platform for marketing agencies and other B2B service businesses. Users describe their offer, target market and location, then Pipefire finds business prospects and contact details, prepares email sequences for approval, and operates the sending workflow. The service provisions sending domains and mailboxes, warms them before campaigns begin, sends follow-ups, monitors sending health and organizes replies for review. Customers can approve campaign content and suggested replies through the web console. Outreach runs from Pipefire-managed domains rather than customers’ primary company domains. Plans bundle prospect research, domains, mailboxes, warm-up, sending and reply handling, with capacity varying by plan. Pipefire is intended for businesses selling to other businesses that want outbound email managed instead of configuring and operating separate email tools themselves.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
B2B companies
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Audience
Marketing agencies and B2B service businesses.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
$497/month
Standard is $497 per month, month to month with no minimum term; it includes 10 sending domains, 20 mailboxes, managed warm-up, campaign copy, a reply inbox and deliverability monitoring. Scale is $997 per month and includes 20 domains, 40 mailboxes and twice Standard’s daily sending capacity.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationColdStack.co
Founded: 2025
United States
www.coldstack.so/
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Company InformationM&B Marketing
Founded: 2018
France
pipefire.ai
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Categories |
Categories |
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Integrations
Gmail
Supported
Model Context Protocol (MCP)
Not Supported
Slack
Supported
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Integrations
Gmail
Not Supported
Model Context Protocol (MCP)
Supported
Slack
Not Supported
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