ColdStackColdStack.co
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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
SmartFlowPros is a cloud-based email outreach and follow-up platform for recruiters, staffing firms, small sales teams, and agencies. It connects to Microsoft 365 or Gmail/Google Workspace so users can send personalized, multi-step sequences from their own mailboxes. Users can create AI-assisted email copy, import contacts by CSV, schedule follow-ups, and monitor opens, replies, and bounces. Future messages can stop automatically when a recipient replies or a message bounces. The platform includes a reply inbox with AI-assisted draft suggestions, email warmup, deliverability checks, and team workflows. CRM sync is documented for HubSpot, Salesforce, and Pipedrive, with Calendly scheduling support. Recruiting workflows include candidate follow-ups and interview reminders; other uses include client and prospect outreach. SmartFlowPros is accessed through a web application.
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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
Owners and recruiters at small staffing and search firms, plus small agencies and consultancies doing their own outbound email.
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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
Not 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
$49/user/month
Classic is $49 per user per month and includes a 500-email daily limit. Smart is $89 per user per month and includes unlimited sending, AI flow editing, reply drafts, and A/B testing. A 14-day free trial is available without a credit card.
Free Version
Not Supported
Free Trial
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 InformationSmartFlowPros
United States
smartflowpros.com
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Gmail
Supported
Calendly
Not Supported
HubSpot CRM
Not Supported
Microsoft 365
Not Supported
Pipedrive
Not Supported
Salesforce
Not Supported
Slack
Supported
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Integrations
Gmail
Supported
Calendly
Supported
HubSpot CRM
Supported
Microsoft 365
Supported
Pipedrive
Supported
Salesforce
Supported
Slack
Not Supported
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