Puzzle Inbox
Infrastructure-focused reseller offering managed Google Workspace and Microsoft 365 mailboxes for cold email, with DNS pre-configured and an optional pre-warmed tier at a price premium.
Pricing breakdown
| Platform | Standard | Warmed | Volume |
|---|---|---|---|
| Google Workspace | $3.00 | — | — |
| Microsoft 365 | $0.35 | — | — |
Pricing notes
Outlook 365 inboxes are $0.35/inbox/month. Google Workspace starts at $3/inbox/month, with a 15% discount for 150+ inboxes.
Replacements
self-healing replacement
Our take on Puzzle Inbox
Puzzle Inbox resells Google Workspace and Microsoft 365 mailboxes with DNS pre-configured, and its Microsoft pricing is among the lowest anywhere — M365 standard starts around $0.35/mailbox, with GWS near $3.00. A separate pre-warmed tier (at roughly a 40–50% premium) lets you skip the usual two-to-three-week warmup, which is handy if you need to send sooner.
The limitations track its budget positioning. There's no public API, the infrastructure is shared-IP, and independent sources describe replacement and refund conditions as heavily restricted. It's also a young operation — domain registered October 2024 — with only about 31 Trustpilot reviews so far relative to its scale claims, and send-limit guidance that varies across sources. Cheap and fast, but verify the replacement terms and current send limits before relying on it at scale.
What we like
- +Very cheap M365 inboxes (from ~$0.35)
- +Both GWS and M365 with DNS pre-configured
- +Optional pre-warmed tier to skip the 2–3 week wait
- +Fast turnaround
Watch out for
- −No public API
- −Shared IP infrastructure
- −Replacement and refund terms are heavily restricted
- −New provider (domain Oct 2024) with a limited review base so far
Best for: Cost-driven senders who want very cheap Microsoft inboxes and don't need API access or dedicated IPs.