ColdStack

ColdStack

ColdStack.co
+
+

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About

Cheap Sequencer is a cloud-based cold email platform for lead generation agencies and internal sales teams. It lets users import contacts, build email sequences with scheduled follow-ups and personalized variants, distribute sends across connected mailboxes, and warm up inboxes. Campaigns stop sending follow-ups when a lead replies, and a shared inbox helps teams manage responses. Plans include contact and workspace management, with higher tiers supporting existing Gmail and Outlook mailboxes.

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.

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

Lead generation agencies and internal sales teams.

Audience

B2B companies

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 Not Supported

API

Offers API 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

No information available.
Free Version Not Supported
Free Trial Not 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 Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

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

Company Information

cheapsequencer.com

Company Information

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

Alternatives

Alternatives

emailcampaign.ai

emailcampaign.ai

Email Campaign LLC
Pipefire

Pipefire

M&B Marketing
PrimaryHub

PrimaryHub

Voltic

Categories

Cold Email Supported

Categories

Cold Email Supported

Integrations

Gmail Supported
Microsoft Outlook Supported
Slack Not Supported

Integrations

Gmail Supported
Microsoft Outlook Not Supported
Slack Supported
Claim Cheap Sequencer and update features and information
Claim Cheap Sequencer and update features and information
Claim ColdStack and update features and information
Claim ColdStack and update features and information