<b>Google Workspace vs Microsoft 365 for cold inboxes</b>

<b>Google Workspace vs Microsoft 365 for cold inboxes</b>
The mailbox provider you choose shapes deliverability before any tool touches it.

Google Workspace: ~$6/inbox/mo, predictable spam filters, plays nice with most warm-up tools, and Gmail-to-Gmail delivery is strong. Bulk-account creation is now harder (verification friction).

Microsoft 365 (Outlook): similar price, but cold senders report stricter filtering into Outlook/Hotmail recipients and tighter sending limits. Better if your targets are corporate Outlook users.

Pros / Cons
— Google Workspace: forgiving, broad tool support, harder to provision at scale
— Microsoft 365: better Outlook-recipient delivery, stricter sending caps, finicky throttling

Who it's for: Google for general B2B SaaS lists. Microsoft if your ICP is enterprise/IT where Outlook dominates the inbox.

Verdict: 4/5 Google Workspace as default, 4/5 Microsoft 365 when targeting matches the provider. Matching sender provider to recipient provider quietly lifts inbox placement — a free edge most people ignore.