ColdStack

ColdStack

ColdStack.co
+
+

Related Products

  • Introw PRM
    122 Ratings
    Visit Website
  • InboxAlly
    136 Ratings
    Visit Website
  • Fathom
    7,880 Ratings
    Visit Website
  • Cloverleaf
    189 Ratings
    Visit Website
  • UptimeRobot
    880 Ratings
    Visit Website
  • StackAI
    55 Ratings
    Visit Website
  • Monk
    8 Ratings
    Visit Website
  • Daylight
    15 Ratings
    Visit Website
  • Bluepear
    70 Ratings
    Visit Website
  • Hostaway
    2,110 Ratings
    Visit Website

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.

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.

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

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

Audience

B2B companies

Audience

Owners and recruiters at small staffing and search firms, plus small agencies and consultancies doing their own outbound email.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

No images available

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

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

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

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 Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

ColdStack.co
Founded: 2025
United States
www.coldstack.so/

Company Information

SmartFlowPros
United States
smartflowpros.com

Alternatives

Alternatives

PrimaryHub

PrimaryHub

Voltic

Categories

Cold Email Supported

Categories

Cold Email Supported

Integrations

Gmail Supported
Calendly Not Supported
HubSpot CRM Not Supported
Microsoft 365 Not Supported
Pipedrive Not Supported
Salesforce Not Supported
Slack Supported

Integrations

Gmail Supported
Calendly Supported
HubSpot CRM Supported
Microsoft 365 Supported
Pipedrive Supported
Salesforce Supported
Slack Not Supported
Claim ColdStack and update features and information
Claim ColdStack and update features and information
Claim SmartFlowPros and update features and information
Claim SmartFlowPros and update features and information