ColdStack

ColdStack

ColdStack.co
+
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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

Mailscale is a software that helps you generate up to 1000 email accounts. As a result, you can send cold emails at scale and get more clients than you can handle. The simple reason you’re not getting enough clients is that you’re not being seen. Your next 100 clients are literally an email away. Sending cold emails at scale is a hassle, to not land in the spam, you need to create dozens of them. Mailscale automates email account creation faster & cheaper. We can help you create your virtual sales force of 50 or 1000 email accounts in minutes. Manually set up domains, email accounts, DMARC, DKIM, SPF, domain forwarding, and email forwarding. Let Mailscale generate email accounts for you, then add them to your email-sending tool with a single click. Mailscale helps more than 500 agency owners, freelancers, and software founders to get more clients. Buy secondary domains inside of Mailscale, fill out a 5-minute form, and get your CSV of ready-to-use email accounts by tomorrow.

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 wanting a tool to get more clients by scaling their cold email outreach

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

$79 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

Mailscale
United Arab Emirates
www.mailscale.ai/

Alternatives

Alternatives

Rubedo

Rubedo

Rubedo.ai

Categories

Categories

Integrations

Gmail
Google Sheets
Instantly
Microsoft Excel
Saleshandy
Slack
Smartlead.ai

Integrations

Gmail
Google Sheets
Instantly
Microsoft Excel
Saleshandy
Slack
Smartlead.ai
Claim ColdStack and update features and information
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