Inframail vs Maildoso
Inframail and Maildoso take different approaches to cold email pricing. Inframail offers unlimited inboxes for a flat monthly fee on Microsoft infrastructure. Maildoso charges per inbox but starts at just $1.80. Read our full reviews: Inframail review and Maildoso review.
TL;DR
Inframail = flat rate for unlimited inboxes on Microsoft. Maildoso = $1.80/inbox on shared IPs. Inframail wins at scale (50+ inboxes), Maildoso wins for smaller operations.
Feature Comparison
Pricing Breakdown
Inframail's flat-rate model means your cost per inbox drops as you scale. At 100 inboxes, you're paying a fraction per inbox compared to per-seat providers.
Maildoso at $1.80/inbox is the cheapest per-inbox rate in the market, but includes free domains which adds real value. For small teams (under 30 inboxes), Maildoso is likely cheaper total.
Infrastructure Quality
Inframail uses Microsoft-backed infrastructure. Better isolation than pure shared IPs, with automatic SPF, DKIM, and DMARC setup.
Maildoso runs on shared IP infrastructure. Your reputation is partially influenced by other users on the same IPs. Fine for most use cases, but less predictable.
When to Choose Inframail
- You need 50+ inboxes
- You want predictable monthly costs regardless of scale
- Microsoft infrastructure matters to you
- You're scaling rapidly and don't want per-inbox math
When to Choose Maildoso
- You need fewer than 50 inboxes
- Free domains are valuable to you
- You're testing cold email before committing
- Budget is the primary concern
Verdict
The decision hinges on scale. Inframail's unlimited model pays off at 50+ inboxes. Maildoso's per-inbox pricing wins below that threshold.
Choose Inframail if
Choose Inframail if you're running 50+ inboxes or want Microsoft infrastructure at predictable cost.
Choose Maildoso if
Choose Maildoso for budget operations under 50 inboxes, especially if free domains matter.
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Last updated: 2026-03-07