Findings / Google Workspace vs Microsoft 365← How it shifts, batch by batchWhat the homepage is built with →
03 / 10 · Google Workspace vs Microsoft 365 · 1,828 YC startups
90% run email on Google Workspace, 18.5× Microsoft 365. Yet 20% have a Microsoft 365 tenant verified in DNS, mostly for things other than mail.
| Label | Share | Value |
|---|---|---|
 Google Workspace | 90% | |
 Microsoft 365 | 4.9% | |
 Cloudflare Email Routing | 0.6% | |
 Namecheap Email Forwarding | 0.4% | |
| Other | 1.2% | |
| None detected | 2.6% |
How it was measured
From MX records (SPF when MX points at a filtering gateway). Forwarders like Cloudflare Email Routing are counted as what the domain runs.
Sample
1,828 of 1,873 listed YC startups, W24–F26. Medium confidence and up. Methodology