Google vs Outlook for Cold Email: Platform Diversification Guide

Why running campaigns across both Google Workspace and Microsoft 365 reduces risk and often improves deliverability.

Why Platform Diversification Matters

Cold email data from agencies managing 100+ inboxes consistently shows that running both Google Workspace and Microsoft 365 accounts improves overall deliverability by 10-15%.

The Sender-Recipient Matching Effect

B2B email usage breaks down to approximately: 35% Gmail, 40% Microsoft, 25% other providers. If you use only Google Workspace, you are sending to 40% of prospects through suboptimal infrastructure.

Implementing Diversification

The recommended split is 60% Google Workspace, 40% Outlook 365. Most modern sending platforms support routing emails through specific accounts based on recipient domain.