---
title: "Sovereign Cloud & SmarterMail Enterprise TCO Calculator (vs. M365 / Google Workspace)"
url: https://www.greentreehosting.com/tools/cloud-and-enterprise-email-tco-calculator/
description: "Calculate your 3-year hard dollar savings migrating from Microsoft 365 or Google Workspace to GreenTree SmarterMail Enterprise + Proxmox Mail Gateway."
format: text/markdown
generated_from: prerendered HTML (build time)
---

[All 4 Interactive Engineering Calculators](https://www.greentreehosting.com/tools)

Cloud & Email TCO

# Managed Cloud & SmarterMail TCO Calculator. Compare Per-Seat Hyperscaler Licensing Against Decoupled Enterprise Infrastructure.

Compare your current annual spend on Microsoft 365, Google Workspace, GoDaddy, or WP Engine against GreenTree’s decoupled SmarterMail Enterprise + Proxmox Mail Gateway and Managed Linux Cloud.

Per-seat SaaS inflation (**$14–$24/user/mo** for M365/Google Workspace plus third-party spam filtering and backup add-ons) quietly drains **five figures a year** from growing 15-to-150-person organizations.

[Web Application ROI Estimator](https://www.greentreehosting.com/tools/application-roi-and-architecture-estimator)[Cloud & Email TCO Calculator](https://www.greentreehosting.com/tools/cloud-and-enterprise-email-tco-calculator)[301 Cutover & SEO Validator](https://www.greentreehosting.com/tools/forensic-301-cutover-and-seo-equity-validator)[DNS & Mail Deliverability Auditor](https://www.greentreehosting.com/tools/email-deliverability-and-dns-sovereignty-auditor)

## Compare Hyperscaler Per-Seat Licensing vs. GreenTree SmarterMail

Active Organization Mailboxes: 40 mailboxes

Current Per-Mailbox Monthly Spend (M365 / Google Workspace): $18/mailbox/mo

Current Monthly Web Hosting / Cloud Spend: $250/mo

Target GreenTree SmarterMail Tier (1 Account Included w/ $99+ Hosting):

36-MONTH INFRASTRUCTURE SAVINGS LEDGER

$17,316 saved

Includes GreenTree Core Cloud ($99/mo w/ 1 Enterprise Mailbox Included) + Inbound PMG & Multi-Gateway Outbound

Current Annual Mail + Cloud Spend:**$11,640 / yr**

GreenTree Annual Mail + Core Cloud ($99/mo):**$5,868 / yr**

[Schedule Zero-Downtime Mail & Cloud Cutover](https://www.greentreehosting.com/order?track=email)