Should You Buy Cold Email Mailboxes From a Reseller or Directly From Google

When setting up cold email mailboxes on Google Workspace or Microsoft 365, you have two procurement options: buy directly from Google or Microsoft, or buy through a third-party reseller. For individual setups with a few mailboxes, the difference is minor. For agencies and teams managing 20 or more mailboxes across multiple client campaigns, the choice has real operational implications.

Buying Directly From Google or Microsoft

Purchasing Google Workspace directly through Google's admin interface gives you full control over the account structure, billing, and admin permissions. Each client or campaign gets its own Google Workspace account, with separate billing and separate admin credentials. This is the most straightforward setup for a single campaign but becomes administratively complex when managing dozens of separate accounts. Direct pricing is $6 per user per month for Business Starter on Google Workspace.

Buying Through a Reseller Like InboxKit

Resellers like InboxKit purchase Google Workspace and Microsoft 365 mailboxes in bulk and provision them on demand for cold email infrastructure customers. The advantages are: single billing interface for all mailboxes across all campaigns, API-level provisioning for faster setup, built-in DNS and warmup management, and often lower per-mailbox cost at higher volumes. The tradeoff is that you are operating within the reseller's infrastructure rather than having direct Google admin access.

Which to Choose

For agencies managing cold email infrastructure for multiple clients: reseller platforms like InboxKit are operationally superior at scale. For individual businesses running their own campaigns with fewer than 10 mailboxes: direct Google Workspace is simpler and provides full admin control. Omni uses InboxKit for all client mailbox provisioning. Details on infrastructure setup are in the outbound system overview.