Coldstack icon
Coldstack icon

Coldstack

ColdStack unifies Instantly, Smartlead, and EmailBison replies into Slack. Reply to cold email leads without leaving your workspace.

Coldstack screenshot 1

Cost / License

  • Pay once
  • Proprietary

Platforms

  • Online
  • Slack
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 Tags

  • marketing

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Coldstack information

  • Developed by

    Unknown

  • Licensing

    Proprietary and Commercial product.

  • Pricing

    One time purchase (perpetual license) that costs from $79.

  • Alternatives

    0 alternatives listed

  • Supported Languages

    • English
Coldstack was added to AlternativeTo by opensourcewannabe on and this page was last updated .
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What is Coldstack?

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.

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