ColdStack

ColdStack

ColdStack.co
QuickMail

QuickMail

QuickMail.io
+
+

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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.

About

Our software improves deliverability & automates follow-ups so you get more replies with less effort. Create manually, use the contact form or import bulk prospects using CSV or Google Drive spreadsheets. Maximize your workflow by automatically importing your Google Drive spreadsheet whenever it is changed. Maximize your open & reply rate by making every email stand out with personalization. Create your own attributes/merge tag. Add variations with A/B Testing and dynamic text to improve deliverability and improve your reply rate. Wake up each day to find new leads, directly in your inbox, by building a predictable pipeline. We take prospects who replied automatically out of the campaign and reach out again later when they are out of the office. Spam filters are getting smarter each year. Our solution monitors and maintains the health of your inbox with our advanced auto-warmer technology so your emails have a greater chance to land in your recipient’s inbox.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

B2B companies

Audience

Businesses searching for a solution to send automated emails & start more conversations

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$49 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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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
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

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

Company Information

QuickMail.io
Founded: 2014
Switzerland
quickmail.io

Alternatives

Alternatives

Rubedo

Rubedo

Rubedo.ai
Instantly

Instantly

Instantly.ai

Categories

Categories

Email Marketing Features

A/B Testing
Artificial Intelligence
Auto-Responders
CAN SPAM Compliance
Customer Surveys
Drip Campaigns
Dynamic Content
Event Triggered Email
Image Library
Landing Pages/Web Forms
Mailing List Management
Mobile Optimized Emails
Reporting/Analytics
Subscriber Management
Template Management
WYSIWYG Email Editor

Sales Enablement Features

Collaboration
Contact Management
Content Management
Document Management
Goals / Quota Management
Lead Management
Meeting Management
Performance Management
Presentation Management
Proposal Management
Territory Management
Training Management

Sales Force Automation Features

Call Management
Campaign Management
Channel Management
Commission Management
Contact Management
Contract Management
Customer Database
Email Marketing
Field Sales Management
Lead Management
Opportunity Management
Performance Metrics
Proposal Generation
Referral Tracking
Sales Forecasting
Territory Management

Integrations

Gmail
Slack
AWeber
Act!
Airtable
Axis LMS
Click2Mail
ClickFunnels
Drip
Google Drive
Google Workspace
Lob
RepliQ
Stripe
Todoist
Wufoo
Xero
Zapier
Zoho CRM

Integrations

Gmail
Slack
AWeber
Act!
Airtable
Axis LMS
Click2Mail
ClickFunnels
Drip
Google Drive
Google Workspace
Lob
RepliQ
Stripe
Todoist
Wufoo
Xero
Zapier
Zoho CRM
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