Mailscale Pricing 2026: Plans, Mailbloom Servers & Real Per-Inbox Cost

Mailscale is in the middle of a transition, and that shapes its pricing. The original product — Mailscale.ai — sells tiered per-inbox plans from $79 to $1,000+/month, with the per-inbox cost dropping as low as ~$1.25 at the Enterprise tier. The newer product — Mailbloom — replaces per-inbox pricing entirely with a flat per-private-server model (up to 200 mailboxes per server). Both run on Mailscale's own proprietary SMTP infrastructure rather than Google or Microsoft accounts. This guide breaks down Mailscale pricing in 2026 across both models, the domain costs, and what you're really paying per inbox.

Mailscale.ai has four tiers: Solopreneur ($79/mo, up to 15 inboxes), Business ($119/mo, up to 50 inboxes), Enterprise ($249/mo, up to 200 inboxes + $1.50/extra), and Unlimited Mailboxes ($1,000+/mo, application-only) with dedicated IPs and a deliverability specialist. There's a 7-day free trial on the tiered plans. The newer Mailbloom product prices flat per private server (up to 200 mailboxes per server, dedicated fresh IPs) via a calculator/quote rather than a fixed public number, with .com domains from $7.99. On the legacy plans, domains are $10-15/year (or $2 each to bring your own). Both are proprietary SMTP infrastructure, not Google/Microsoft mailboxes, with a deliverability guarantee. The per-inbox cost is excellent at volume (~$1.25 at Enterprise), but the trade-off is proprietary infrastructure and quote-based pricing on the private-server tier.

There are two pricing models under the Mailscale brand:

• Mailscale.ai (tiered per-inbox). Fixed monthly plans bucketed by inbox count and recommended prospect volume. The per-inbox effective cost falls sharply at higher tiers.
• Mailbloom (flat per private server). The newer direction: instead of paying per mailbox, you rent your own dedicated private server (up to 200 mailboxes) with fresh, isolated IPs for one flat price — quoted via calculator.
• Proprietary SMTP, not Google/Microsoft. Mailscale owns its full stack (SMTP servers, IP pools). These aren't official Google Workspace or Microsoft 365 accounts.
• Deliverability guarantee. Mailscale guarantees 95-100% delivery to professional inboxes and will help recover or replace domains within 30 days if placement drops below 80%.

There are no long-term contracts, monthly or yearly billing is available, and you can upgrade anytime.

Rates are from the Mailscale pricing page. The Unlimited tier is application-only for large-volume senders.

Mailbloom (mailbloom.com) is Mailscale's newer, dedicated-infrastructure product. The pitch inverts the shared-inbox model:

• Your own private server used only by you — no shared-reputation risk from "noisy neighbors."
• Fresh, dedicated IP addresses with no history or blacklist baggage.
• Up to 200 mailboxes per server (150+ included), with no per-mailbox charge.
• One flat price per server, presented through a calculator rather than a fixed public number.
• .com domains from $7.99, or bring your own.
• Everything bundled: auto SPF/DKIM/DMARC, 1-click domain/mailbox creation, customer screening (they reject spammers), 24/7 server and mailbox monitoring, developer API, Smartlead/Instantly integration, and live support (sub-5-minute replies).

Mailbloom's value framing: 100 mailboxes on Google Workspace runs ~$600/month and you're still on shared servers; on Mailbloom you get up to 200 mailboxes on your own private server for one flat price. Recommended sending is conservative — 4 mailboxes/domain, 20 emails/mailbox/day.

On the tiered Mailscale.ai plans, the per-inbox math improves dramatically with scale:

• Solopreneur: $79 ÷ 15 = ~$5.27/inbox — expensive per inbox; this tier is about convenience, not price.
• Business: $119 ÷ 50 = ~$2.38/inbox — competitive.
• Enterprise: $249 ÷ 200 = ~$1.25/inbox — among the cheapest per-inbox rates anywhere (additional inboxes at $1.50).
• Plus domains: $10-15/year each (at ~5 inboxes/domain, ~$0.20/inbox/month) or $2 each to bring your own.

So Mailscale is priced for volume: small senders pay a premium per inbox, while high-volume senders at Enterprise get rates near $1.25/inbox. On Mailbloom, the more mailboxes you run per server, the lower your effective per-mailbox cost — but the flat per-server price is quote-based, so you must model your real cost at your actual mailbox count.

Five things to weigh:

1. 1It's proprietary SMTP, not Google/Microsoft. Mailscale/Mailbloom run their own infrastructure. That's fine for B2B volume and gives them control, but it's a different deliverability profile than official Google/Microsoft accounts, and some recipients/filters treat established Google/Microsoft domains more favorably.
2. 2Mailbloom pricing is quote-based. The flat per-server price comes from a calculator, not a fixed public number. Model your real cost before comparing.
3. 3Domains cost extra on legacy plans. $10-15/year inside Mailscale, or $2 each to bring your own (with no deliverability guarantee on BYO domains).
4. 4Brand transition confusion. "Mailscale" now spans the legacy per-inbox product and the newer Mailbloom private-server product. Verify which one you're actually buying.
5. 5An unusual deliverability stance. Mailscale's own FAQ argues "deliverability isn't a function of infrastructure or mailboxes anymore" and emphasizes spintax and sending hygiene — a notable position from a company selling infrastructure. Treat the guarantee as conditional on following their sending guidance.

The honest positioning: Mailscale is genuinely cheap per inbox at volume (the Enterprise tier's ~$1.25/inbox is hard to beat), and Mailbloom's private-server model with fresh dedicated IPs is a strong isolation play for high-volume senders who can keep IPs warm. The trade-offs are that you're buying proprietary SMTP rather than official Google/Microsoft accounts, the Mailbloom price is quote-based, and dedicated IPs only pay off at sustained volume. InboxKit takes the opposite approach: official Google Workspace, Microsoft 365, and Azure mailboxes on premium US IPs at $2.50-$3.50 per mailbox, with full admin panels, API access, and always-on InfraGuard monitoring (blacklist checks every 6 hours, DNS watchdog, bounce tracking). You pay more per inbox than Mailscale Enterprise, but you get official accounts and continuous monitoring rather than proprietary SMTP and a periodic guarantee.

Mailscale.ai makes sense for volume-focused B2B senders and agencies who want the cheapest possible per-inbox cost and are comfortable on proprietary SMTP infrastructure — the Business and Enterprise tiers ($2.38 and ~$1.25/inbox) are excellent value, and the 7-day free trial lowers the risk of trying it. Mailbloom suits high-volume senders and agencies who specifically want dedicated, isolated IPs and a flat per-server price, and who send enough per IP to keep reputation strong. Both are good fits for operators who already run their sequencer and just need cheap, fast-to-create inboxes.

Mailscale/Mailbloom is harder to justify when:

• You want official Google/Microsoft accounts. Mailscale is proprietary SMTP. For official Google Workspace, Microsoft 365, or Azure mailboxes with admin control, see InboxKit.
• You send low volume. Solopreneur at ~$5.27/inbox is pricey, and dedicated IPs on Mailbloom need volume to warm. A small, well-run official setup may deliver better value.
• You want transparent, fixed pricing. Mailbloom's quote-based per-server model means no public number until you run the calculator.
• You want continuous monitoring built in. Mailscale offers a deliverability guarantee and Mailbloom monitors servers, but always-on blacklist/DNS/bounce alerting across plans (like InboxKit's InfraGuard) is a different value layer.

Mailscale's pricing rewards volume. On the legacy Mailscale.ai tiers, the per-inbox cost falls from ~$5.27 (Solopreneur) to ~$1.25 (Enterprise), making it one of the cheapest ways to get a lot of inboxes if proprietary SMTP fits your use case. The newer Mailbloom private-server model is a genuine isolation upgrade — fresh dedicated IPs, customer screening, and 24/7 monitoring at a flat per-server price — and it's compelling for high-volume senders who can keep IPs warm.

The caveats are consistent: these are proprietary SMTP mailboxes rather than official Google/Microsoft accounts, Mailbloom's pricing is quote-based, and the deliverability guarantee depends on disciplined sending. If you'd rather have official Google Workspace, Microsoft 365, or Azure mailboxes on US IPs, with full admin control and always-on InfraGuard monitoring at a transparent per-mailbox price, see how InboxKit compares.