CheapInboxes Pricing 2026: Per-Mailbox Tiers, Domains & Real Cost

CheapInboxes uses pure volume-tiered per-mailbox pricing with no base plan fee: $3.50/mailbox/month for 1–99 mailboxes, $3.25 for 100–249, $3.00 for 250–999, and $2.80 for 1,000+. Google Workspace and Microsoft mailboxes are the same price. Domains are sold separately starting at $2.50/year (with bundle deals like 3 domains for $10), or you can bring your own for free. There are no setup fees and no contracts. The differentiators are pre-warmed inboxes (ready to send day one), official Business Starter accounts with full admin access, OAuth auto-connect, one-domain-per-workspace isolation, and 24/7 WhatsApp support with sub-5-minute response times. The trade-offs: no built-in deliverability monitoring (blacklist/DNS/bounce alerting), and the per-mailbox rate only beats competitors meaningfully once you're buying hundreds.

CheapInboxes has the most stripped-down commercial model in the category:

• One number: per-mailbox, volume-tiered. No plan tiers, no feature gates. Every mailbox includes the same features (pre-warmed, OAuth, workspace isolation, support). You only pay more per mailbox if you buy fewer of them.
• No base fee, no minimum plan. Order one mailbox or three thousand — the slider runs from 1 to 2,000+. Your monthly cost is simply rate × mailbox count.
• Domains are separate. Mailbox pricing excludes domains, which start at $2.50/year. Bring-your-own domains are free to import.
• Google and Microsoft cost the same. No Microsoft premium, unlike some providers.

There are no setup costs and no long-term contracts.

Rates are from the CheapInboxes inbox estimator. Google Workspace and Microsoft mailboxes are priced identically. Tiers apply automatically based on total mailbox count — there's no separate plan to choose.

Every CheapInboxes mailbox, regardless of count, includes:

• Pre-warmed inboxes. This is the headline feature — mailboxes arrive ready to send volume "from day one" rather than requiring weeks of warmup. For agencies spinning up campaigns fast, that's a real time saver.
• Official Business Starter accounts with admin access. CheapInboxes positions these as official Google/Microsoft workspace accounts (not SMTP relays or educational accounts), with full admin control per workspace.
• OAuth auto-connect and auto-reconnect. Fully automated connection to sequencers (Instantly, Smartlead, Reachinbox, Reply, Lemlist, and more), with auto-reconnect "within minutes" if a mailbox drops.
• One domain per workspace isolation. Each workspace gets its own domain, so a reputation problem on one can't cross-contaminate others.
• Fast setup. ~30 minutes / same-day provisioning.
• 24/7 human support. WhatsApp-based, with a stated sub-5-minute average response — consistently the most-praised part of the product in testimonials.
• Domain perks. WHOIS privacy included free, free bring-your-own-domain import, and free transfer-away (you get an EPP code; domains must be 60+ days old to transfer).

The per-mailbox rate excludes domains, so factor those in. At the typical 1–3 mailboxes per domain that cold email setups use for isolation, domains add up:

• A small operation running 25 mailboxes at $3.50 = $87.50/month, plus ~9–25 domains at $2.50/year ≈ $2–5/month amortized. All-in ≈ $90–93/month.
• A scaled operation at 250 mailboxes at $3.00 = $750/month, plus domains. Domain cost stays minor relative to mailboxes.

Because domains are cheap ($2.50/year, or bundle deals like 3 for $10), the domain line rarely changes the decision — unlike providers where domains run $12–20/year. The headline per-mailbox rate is close to the true all-in cost.

Four things to weigh before buying:

1. 1No built-in deliverability monitoring. CheapInboxes provisions and connects mailboxes well, but there's no always-on blacklist, DNS, or bounce monitoring with alerting. You find out about reputation problems by watching your campaign metrics, not from the platform. Providers like InboxKit bundle this (InfraGuard).
2. 2Pre-warmed ≠ permanently warm. "Ready day one" saves the initial ramp, but deliverability still depends on how you send. Aggressive volume on a pre-warmed mailbox can still burn it; there's no warmup-on-autopilot to maintain reputation over time.
3. 3The cheapest tiers need real volume. $2.80/mailbox only applies at 1,000+ mailboxes, and $3.00 at 250+. Small buyers pay $3.50 — competitive, but not dramatically cheaper than official-account providers at the same count.
4. 4"Official account" claims vary across resellers. CheapInboxes states its accounts are official Business Starter with admin access (and contrasts itself against resellers using "legacy or educational accounts"). It's worth verifying account type for your use case, since reseller-panel approaches carry more provider-side risk than directly provisioned infrastructure.

The honest positioning: CheapInboxes is genuinely one of the simplest and cheapest ways to get pre-warmed Google/Microsoft inboxes, and its support reputation is excellent. Where it stops short is the infrastructure-management layer — there's no continuous monitoring to catch a blacklisting or DNS drift before it tanks a campaign. InboxKit sits in the same per-mailbox range ($2.50–$3.50 depending on plan), delivers official Google Workspace, Microsoft 365, and Azure mailboxes with full admin panels and US-IP infrastructure, and bundles always-on InfraGuard monitoring (blacklist checks every 6 hours, DNS watchdog, bounce tracking, inbox placement tests). The trade is CheapInboxes' dead-simple per-mailbox pricing versus InboxKit's plan-plus-slots model with monitoring built in.

CheapInboxes makes sense for agencies and high-volume senders who want the cheapest pre-warmed inboxes with minimal setup friction. If you value getting mailboxes that send from day one, dirt-cheap domains, OAuth auto-connect, and famously fast support — and you're comfortable doing your own deliverability monitoring — it's hard to beat on simplicity and price. It's especially strong for operators running hundreds to thousands of mailboxes, where the $2.80–$3.00 tiers kick in and the per-mailbox savings compound.

CheapInboxes is harder to justify when:

• You want built-in deliverability monitoring. No blacklist/DNS/bounce alerting means you're flying on campaign metrics alone. If you want to catch problems proactively, look at a provider with monitoring bundled like InboxKit.
• You need only a handful of mailboxes. At 1–99 you pay $3.50/mailbox — fine, but not a dramatic discount over official-account providers, and you miss the monitoring/admin tooling some bundle at that price.
• You want a single bundled platform fee. CheapInboxes is pure per-mailbox; teams that prefer a plan with included slots, API/webhooks, and unlimited workspaces may find a plan-based model cleaner to budget.
• Account-type assurance matters. If your campaigns can't tolerate any reseller-panel risk, verify the exact account provisioning before committing.

CheapInboxes delivers exactly what it advertises: cheap, pre-warmed Google and Microsoft inboxes with refreshingly simple per-mailbox pricing, near-free domains, and support that customers rave about. The slider-based model is the most transparent in the category — what you see is essentially what you pay, with domains adding only a few dollars a month. For agencies running large mailbox volumes who want speed and price above all, it's a strong pick.

The gap is the management layer. There's no continuous deliverability monitoring, so protecting reputation is on you, and pre-warmed inboxes still need disciplined sending. If you want the same official Google Workspace, Microsoft 365, and Azure mailboxes at a comparable per-mailbox price plus always-on InfraGuard monitoring, automated DNS, full admin panels, and US-IP infrastructure, see how InboxKit compares.