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
  • Hostaway
    2,110 Ratings
    Visit Website
  • Bluepear
    67 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

Overloop is an AI-powered sales prospecting platform designed to help sales teams find and engage ideal prospects without manual effort. The platform automatically sources leads from a database of 450M+ verified B2B contacts based on your ideal customer profile criteria, then uses AI to write hyper-personalized cold emails and LinkedIn messages by analyzing each prospect's website and social presence. Multi-channel outbound campaigns combine email and LinkedIn outreach with automated follow-ups, all running on autopilot. Built-in deliverability tools including email warmup and verification ensure messages reach inboxes, not spam folders. A unified conversation inbox centralizes all prospect replies in one place. Smart segments automatically group prospects based on custom filters, while visual workflows eliminate repetitive tasks. Campaign analytics track opens, clicks, replies, bounces, and conversions, with industry benchmarking to optimize performance. AI-generated content supports

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

Multi-channel outbound platform that helps companies to handle their sales pipeline and track their performances

Support

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

Support

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

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

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

Pricing

$69 per user per month
Overloop offers three tiers: Starter at $69/user/month (250 credits, 1 email account, 3 campaigns), Growth at $99/user/month (500 credits, 3 email accounts, 10 campaigns), and Enterprise at custom pricing (1,000 credits, unlimited email accounts and campaigns). overloop All plans include AI-powered campaigns, 450M+ prospect database, email verification, and multi-channel outreach (email + LinkedIn). A 14-day free trial is available.
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

Overloop
Founded: 2015
Belgium
overloop.com

Alternatives

Alternatives

lemlist

lemlist

lempire
PrimaryHub

PrimaryHub

Voltic
Rubedo

Rubedo

Rubedo.ai

Categories

Cold Email Supported

Categories

AI Sales Tools Supported
AI SDR Supported
Cold Email Supported
CRM Supported

CRM Features

Calendar/Reminder System Not Supported
Call Logging Not Supported
Document Storage Supported
Email Marketing Supported
Internal Chat Integration Supported
Lead Scoring Not Supported
Marketing Automation Integration Supported
Mobile Access Supported
Quotes / Proposals Not Supported
Segmentation Supported
Social Media Integration Supported
Task Management Supported
Territory Management Not Supported

Integrations

Gmail Supported
Slack Supported
Aircall Not Supported
Calendly Not Supported
Google Chrome Not Supported
Google Workspace Not Supported
HubSpot CRM Not Supported
LinkedIn Not Supported
Microsoft 365 Not Supported
Microsoft Outlook Not Supported
Pipedrive Not Supported
Pipedrive Dealbot Not Supported
Salesforce Not Supported
Vinna AI Not Supported
Zapier Not Supported
Zoho CRM Not Supported

Integrations

Gmail Supported
Slack Supported
Aircall Supported
Calendly Supported
Google Chrome Supported
Google Workspace Supported
HubSpot CRM Supported
LinkedIn Supported
Microsoft 365 Supported
Microsoft Outlook Supported
Pipedrive Supported
Pipedrive Dealbot Supported
Salesforce Supported
Vinna AI Supported
Zapier Supported
Zoho CRM Supported
Claim ColdStack and update features and information
Claim ColdStack and update features and information
Claim Overloop and update features and information
Claim Overloop and update features and information