TL;DR
Inframail = unlimited inboxes, flat rate, Microsoft infrastructure. Mailscale = $2-3/inbox, budget shared infrastructure. Inframail wins at 50+ inboxes, Mailscale for smaller operations.
Feature Comparison
Scaling Economics
Inframail's flat-rate unlimited model means you pay the same whether you run 50 or 500 inboxes. At scale, your effective per-inbox cost approaches zero.
Mailscale at $2-3/inbox scales linearly. 100 inboxes = $200-300/month. The math is simple but doesn't favor high volume.
Infrastructure Quality
Inframail uses Microsoft-backed infrastructure with automatic DNS setup. Better reputation isolation than pure shared IPs.
Mailscale uses shared infrastructure optimized for scale and cost. Variable deliverability depending on other users.
When to Choose Inframail
- You need 50+ inboxes
- Predictable costs matter regardless of scale
- Microsoft infrastructure provides needed deliverability
- You want unlimited scaling without per-inbox math
When to Choose Mailscale
- You need fewer than 50 inboxes
- Budget is the top priority
- You're testing before committing to infrastructure
- Variable deliverability is acceptable
Verdict
Inframail wins at scale with flat-rate unlimited pricing. Mailscale works for budget operations under 50 inboxes.
Choose Inframail if
Choose Inframail for 50+ inboxes where predictable pricing and Microsoft backing matter.
Choose Mailscale if
Choose Mailscale for budget operations where per-inbox pricing makes sense.
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Start setupLast updated: 2026-03-07