Mailscale review 2026: pricing, pros and cons of its shared-IP SMTP inboxes

Pros, from Mailscale's own pages: a low price per inbox at volume ($1.25 on Enterprise, $1 past 200, $199 a month yearly); a 7-day free trial on the self-serve plans; inboxes ready as a CSV 20 to 30 minutes after the order; up to 30 campaign emails per inbox a day; domains in your name that stay yours if you cancel; and a done-for-you option with lead data and AI copy for teams that want to hand outbound over.

Cons: no refunds of any kind and automatic renewal; warmup and sending need a second subscription; IPs shared with every other customer; no Google Workspace or Microsoft 365 accounts; no public API or MCP server; CSV export only; two price tables in the app and two sets of limits in the help center; and a home page that now sells a service priced only on a call.

15 inboxes: Mailscale Solopreneur $79 plus 3 .com domains ($3.75 a month) plus a sequencer. At 25 a day the inboxes send about 8,250 emails a month, past Instantly Growth's 5,000, so Hypergrowth at $97 (Instantly pricing): about $180 a month. 15 Outreach2day mailboxes are $37.50 with warmup and the sequencer, plus 3 domains at $13 a year: about $41.

50 inboxes: Business $119 + 10 domains ($12.50) + Hypergrowth $97 is about $229. On Outreach2day, $125 + 10 domains ($10.83) is about $136.

200 inboxes: Enterprise $249 + 40 domains ($50) + Hypergrowth $97 is about $396; on Outreach2day $500 + 40 domains ($43) is about $543. At this size the Mailscale stack lists lower, on shared IPs and with no refunds. From 1,000 mailboxes we quote a price below every vendor list price in our comparisons on a call.

The refund policy is strict: "No refunds or credits will be issued for partial usage, early cancellation, failure to cancel prior to renewal, lack of results, or customer dissatisfaction." The deliverability commitment there is domain replacement, and a chargeback without contacting support can get the account suspended. A 2025 help article still promises "your money back or we buy new domains" if deliverability recovery fails; the policy page is the newer and stricter text.

Subscriptions renew automatically. Self-serve customers cancel through a cancel form; Agentic and "Unlimited" customers through their account manager. On Trustpilot, refunds and cancellation are the most common complaints in the one-star reviews.

The 2024 limits article allows 30 campaign emails and 20 warmup emails per inbox a day. A June 2026 article about Microsoft's graymail filter gives 30 and 30, and adds that cold email to Hotmail, Outlook.com, Live and MSN addresses breaks Mailscale's policy and can get the account suspended.

30 a day on shared IPs is above the 25 we recommend per mailbox. If you size a Mailscale setup on 30, plan more inboxes the moment bounce or spam rates move.

Several pages ranking for "mailscale" describe a product that no longer matches Mailscale's own pages: "built-in warmup" (the help center sends you to your sequencer), "no free trial" (sign-up shows 7 days), $3.00 a mailbox (no plan costs that), Google Workspace tiers (not sold), dedicated IPs (the pool is shared) and "up to 1,000 accounts". None mentions the Agentic offer or the refund policy.

Every fact on this page links the Mailscale page it comes from, read on 2026-10-15. Side by side: Mailscale vs Outreach2day and Mailscale vs Mailforge.