Puzzle Inbox
Pre-warmed Google and Microsoft mailboxes with published warmup periods.
From $0.35/inbox
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Bottom line
Pre-warmed Google and Outlook inboxes for cold email. Outlook starts at $0.35 per inbox. Google starts at $3.
Stands out for: Outlook 365 inboxes at $0.35 each with 100 inboxes per domain, sold beside Google at $3.
Watch out for: Outlook allows only 3 emails per inbox per day. Google is 12 per day and 3 inboxes per domain. Delivery takes 24 to 72 hours.
Overview
Puzzle Inbox sells pre-warmed Google Workspace and Outlook 365 inboxes for cold email. Google Standard is $3 per inbox, or $4.50 warmed, with 3 inboxes per domain and 12 emails per inbox per day. Outlook Standard is $0.35 per inbox, or $0.50 warmed, with 100 inboxes per domain and 3 emails per inbox per day. DNS is configured. Delivery is 24 to 72 hours. Done-for-you bundles start at 100 mailboxes and 33 domains for Starter, then Growth and Scale steps.
Volume senders pick Outlook at $0.35 when they will spread sends across many inboxes. Google costs more per inbox but allows more daily sends. Warmup is a higher-priced SKU, not a free extra. There is no printed free trial. The $0.35 Outlook rate is the cheapest way in. Done-for-you plans still bill you for the tools underneath.
Who it's for
Best for
- Teams that want cheap Outlook inboxes at volume
- Senders who will spread volume across many inboxes
- Buyers who want DNS already configured
- Shops considering a done-for-you mailbox bundle
Not ideal for
- Senders who need 20-plus emails per inbox per day
- Teams that must have Google-only infrastructure
Key features
Google Workspace. Official Google Workspace mailbox provisioning for outbound sending.
Microsoft 365. Official Microsoft 365 / Outlook mailbox provisioning for outbound sending.
Pre-warmup. Markets 4 to 12 week pre-warmup before delivery.
Pricing
| Plan | Price | What you get |
|---|---|---|
| Outlook 365 Standard | $0.35/inbox | $0.50 warmed, 100 inboxes per domain, 3 emails per inbox a day |
| Google Workspace Standard | $3/inbox | $4.50 warmed, 3 inboxes per domain, 12 emails per inbox a day |
Outlook 365 Standard is $0.35/inbox ($0.50 warmed), 100 inboxes per domain, 3 emails/inbox/day. Google Workspace Standard is $3/inbox ($4.50 warmed), 3 inboxes per domain, 12 emails/inbox/day. Delivery 24-72 hours. Done-for-you Starter/Growth/Scale bundles listed without printed bundle totals. Confirm current terms on the vendor site.
Checked 19 Sep 2026. Vendors change prices without notice.
Is Puzzle Inbox expensive?
Puzzle Inbox starts at $0.35/inbox. We list 38 deliverability tools in total. 4 have a free tier, and those with a public price typically start around $10 a month.
- 1 quote-based
- 4 free tier
- 37 public price
Worked out automatically from every deliverability listing, so it updates as the directory changes.
Pros and cons
Pros
- Outlook inboxes from $0.35 each
- Pre-warmed Google option at $3
- DNS configured for you
Cons
- Outlook capped at 3 emails/day
- 24-72 hour delivery window
- No published free trial
What's new at Puzzle Inbox
No updates logged yet. Follow Puzzle Inbox and we will email you when it announces something new or its starting price changes.
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How Puzzle Inbox compares
See all Puzzle Inbox alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| | – | $0.35/inbox | – | – | |
| | – | $3.30/inbox/mo | – | ✓ | Compare |
| | – | $39/mo | – | ✓ | Compare |
| | – | $75/mo | ✓ | ✓ | Compare |
| | – | $3.50/mailbox/mo | ✓ | ✓ | Compare |
$3.30/inbox/mo API
Entra/Outlook-style domains at $25 with 25 inboxes included.
$39/mo API
Google and Microsoft reseller mailboxes from $39/mo.
$75/mo MCP API
SMTP at $2.50 per mailbox if you skip Outlook UI.
$3.50/mailbox/mo MCP API
Google and Microsoft inboxes from $3.50 with admin access.
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