---
title: "How Many Cold Email Inboxes Do You Need? | WarmInboxes"
description: "A short walkthrough of the free Warm Inboxes infrastructure calculator: enter a daily send target and get the number of inboxes and domains it takes, with the…"
url: https://warminboxes.com/videos/calculator
breadcrumb: "Home > Tool demos > Infrastructure Calculator"
---
# How Many Cold Email Inboxes Do You Need?

Tool demo · Infrastructure Calculator

A short walkthrough of the free Warm Inboxes infrastructure calculator: enter a daily send target and get the number of inboxes and domains it takes, with the monthly cost.

## Infrastructure Calculator

Work out how many inboxes and domains your target send volume needs, and what it costs, for prewarmed or fresh inboxes on Google, Microsoft 365 or Azure.

[Run the Infrastructure Calculator →](https://warminboxes.com/calculator) Free, no account.