What types of inboxes does Puzzle Inbox offer?

Puzzle Inbox offers both Google Workspace and Microsoft Outlook 365 inboxes for cold email. Both are available as standard or pre-warmed accounts with full DNS configuration (SPF, DKIM, DMARC).

How much do cold email inboxes cost?

Outlook 365 inboxes start at $0.35/inbox (standard) and $0.50/inbox (pre-warmed). Google Workspace inboxes start at $3/inbox (standard) and $4.50/inbox (pre-warmed). All plans include SPF, DKIM, and DMARC configuration.

How long does inbox delivery take?

All inboxes are delivered within 24-72 hours, fully configured with DNS authentication records and ready to connect to your cold email sending platform.

What is a pre-warmed inbox?

A pre-warmed inbox has already completed the email warmup process, establishing sending reputation with Gmail and Outlook servers. This means you can start sending cold emails immediately without the typical 2-3 week warmup period.

Do I need to set up DNS records myself?

No. Puzzle Inbox handles all DNS configuration automatically, including SPF, DKIM, DMARC, and MX records. Every inbox is delivered fully configured and verified.

Puzzle Inbox — Pre-Warmed Cold Email Inboxes

Pre-warmed Google Workspace and Outlook inboxes for cold email outreach. DNS-ready, delivered in 24-72 hours. Starting at $0.35/inbox. Trusted by 1200+ clients with 70,800+ active inboxes.

Why Puzzle Inbox?

Trusted Teams — Used by 1200+ agencies and sales teams
Proven Results — 70,800+ active inboxes deployed
Fast Setup — 24-72 hour delivery, ready to send
Full DNS Configuration — SPF, DKIM, DMARC configured automatically
Pre-Warmed Option — Skip 2-3 weeks of warmup, start sending immediately
Platform Diversification — Both Google Workspace and Outlook 365 available

How It Works

Order Inboxes — Choose Google Workspace or Outlook 365, standard or pre-warmed
We Handle Setup — Domains, DNS records, SPF, DKIM, DMARC, and OAuth configuration
Start Sending — Connect to your cold email tool via SMTP/IMAP and start sending

Pricing

Outlook 365 Standard — $0.35/inbox
Google Workspace Standard — $3.00/inbox
Google Workspace Pre-Warmed — $4.50/inbox

Explore Our Resources

Cold Email Blog — 772 guides and articles
B2B Sales Tools Directory — 686+ tools reviewed
Provider Comparisons — Head-to-head cold email platform comparisons
Community Discussions — 255+ threads from cold email practitioners

Topic Hubs

Best Cold Email Inboxes 2026 — Complete buying guide and provider reviews
Best Cold Email Tools 2026 — Top sending platforms, data, warmup, verification
Pre-Warmed Inboxes 2026 — Pre-warmed cold email inbox guide
Cold Email Inbox Providers — Provider reviews and alternatives
Cold Email Comparisons — Side-by-side tool and platform showdowns
Cold Email Compliance — Country-by-country legal guide (CAN-SPAM/GDPR/CASL)
Cold Email AI Tools — AI SDR agents, content generators, reply classifiers
Cold Email by Role — Founder, SDR, freelancer, fractional, PM playbooks
Cold Email Deliverability — Spam folder recovery + reputation management
Cold Email Guide 2026 — Complete guide for sending cold emails for sales
Cold Email Templates 2026 — Best templates, subject lines, follow-ups
Best Cold Email Software 2026 — Tools, platforms, beginner and agency picks
Cold Email Agency Playbook — Pricing, ops, scaling a cold email agency
Cold Email for Recruiters — Templates and sourcing for recruiters

Buy Cold Email Inboxes

Buy Google Workspace Cold Email Inboxes 2026 — Pricing, bulk, pre-warmed
Buy Outlook 365 Cold Email Inboxes 2026 — Bulk-tier pricing, 100/domain
Buy Pre-Warmed Cold Email Inboxes 2026 — Skip the warmup, ship live
Bulk Cold Email Inboxes 2026 — Wholesale pricing, agency tiers
Cold Email Inbox Pricing 2026 — Per-inbox cost benchmark
Cold Email Inboxes for Agencies 2026 — Managed infrastructure, white-label

Latest Blog Posts

Best Cold Email Infrastructure Providers in 2026 — Honest Comparison — We evaluated the top cold email infrastructure providers on pricing, deliverability, Google Workspace support, and warmup — here's how they stack up.
Why Your Cold Emails Land in Spam (And How to Fix It) — Your cold emails are landing in spam? Here are the 6 most common infrastructure problems causing it and exactly how to fix each one.
SMTP vs Google Workspace for Cold Email — Why Infrastructure Type Matters — SMTP providers don't carry the same IP authority as Google Workspace. Learn why infrastructure type is the biggest factor in cold email deliverability.
How to Set Up SPF, DKIM, and DMARC for Cold Email in 2026 — A complete step-by-step guide to configuring email authentication records that ensure your cold emails reach the inbox, not spam.
Cold Email Warmup: The Complete 2026 Guide — How to properly warm up cold email inboxes to establish sending reputation without getting suspended. Day-by-day protocol included.
How Many Cold Email Inboxes Do You Actually Need? — A practical calculator for determining the right number of inboxes based on your email volume, ICP size, and meeting goals.

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