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Mailionaire vs ScaleSends
ScaleSends is a do-it-yourself tool that helps you create your own Microsoft 365 inboxes on cheap tenants.
| Mailionaire | ScaleSends | |
|---|---|---|
| Email platform | Microsoft 365 | Microsoft 365 |
| Who runs it | Done for you (managed) | You build it (DIY tool) |
| Pricing model | Per active domain, flat — no per-mailbox metering | Per tenant (you manage them) |
| EU / Swiss data residency | Optional EU/Swiss (EU/CH IPs, Microsoft EU Data Boundary) | US or European accounts |
ScaleSends details are a snapshot from mid-2026; check their site for current details.
Choose ScaleSends if…
- — You want maximum control and the lowest possible cost.
- — You are technical and happy to build and maintain the setup yourself.
- — You do not need anyone to manage deliverability for you.
Choose Mailionaire if…
- You want it done for you, not a tool you operate yourself.
- You send to European recipients, or need mailbox data to sit in the EU/Switzerland (EU/CH IPs, Microsoft EU Data Boundary).
- You want it fully managed — set up, monitored, and worn mailboxes and domains replaced for you.
Neither option makes cold email legal: consent and the recipient's local law are always the sender's responsibility, whichever provider you use. See is cold email legal? and what EU residency does and doesn't do.
Want the full picture? Compare all providers side by side, or see how Mailionaire works and what it costs.
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