Pick when you need surgical control over vCPU/RAM/storage, port 25 from minute one for self-hosted mail, and a footprint that spans North America, Europe, the Middle East, and APAC. Avoid if you want managed databases, a Vercel-style polished console, or zero patience for the AS36007 IP-blacklist baggage that comes with their network.
Plans
Verified against Kamatera's pricing pages.
| Plan | vCPU | RAM | Storage | Transfer | Monthly | Hourly |
|---|---|---|---|---|---|---|
| Basic (Type A — Availability, shared) | 1 | 1 GB | 20 GB SSD | 5 TB | $4.00 | $0.0050 |
| Standard (Type B — General Purpose, dedicated thread) | 2 | 2 GB | 20 GB SSD | 5 TB | $25.00 | — |
| Pro (Type B — General Purpose, dedicated thread) | 2 | 4 GB | 20 GB SSD | 5 TB | $39.00 | — |
| Custom mid-tier (Type B — typical reviewer build) | 4 | 8 GB | 100 GB SSD | 5 TB | $49.00 | — |
| Custom small (Type B — community-quoted) | 2 | 4 GB | 40 GB NVMe SSD | 5 TB | $23.50 | — |
SMTP port 25 (outbound mail)
Deal-breaker for self-hosted mail & transactional email.
Open Open by default Read more
Outbound TCP/25 is open by default on every new Kamatera cloud server — even during the 30-day free trial. This is one of the very few mainstream clouds where you can stand up self-hosted mail (Mail-in-a-Box, Mailcow, Postfix, Mailcow) on day one without filing an unblock ticket. The catch is downstream reputation rather than the port itself: AS36007 has a long-standing presence on multiple spam blacklists, and Kamatera reviews PTR (reverse DNS) requests manually — sometimes denying them with vague reasoning that the requester's site 'does not appear to be a real, fully functional website'. Plan a deliverability test from a spare IP before committing.
Verified Apr 27, 2026 · source
Capabilities & infrastructure
Known pitfalls
What the marketing pages don't tell you.
AS36007 IPs have a long-standing spam-blacklist reputation
Kamatera's autonomous system (AS36007) shows up consistently on third-party blacklist trackers, and Trustpilot / HostAdvice reviews from 2024-2026 repeatedly describe outbound mail landing in spam folders even from clean accounts. CleanTalk, AbuseIPDB, and multiple anti-abuse blogs document persistent phishing/scam traffic originating from Kamatera ranges. If you plan to send transactional or marketing email from a Kamatera box, test deliverability (mail-tester.com, GlockApps) from your specific IP before committing — and budget for switching to a relay (SendGrid / Mailgun / Postmark / SES) if you fail.
Reverse DNS (PTR) requests are reviewed manually and can be denied
PTR records for outbound mail are not self-serve — you open a support ticket and Kamatera's team reviews the request. Multiple Trustpilot reviewers in 2025-2026 describe being denied three times with the boilerplate 'your website does not appear to be a real, fully functional website', with no specific criteria offered. If you're standing up self-hosted mail and need a working rDNS, expect friction; have your domain, MX records, and a non-trivial public site live before opening the ticket.
No money-back guarantee — only the 30-day trial is refundable
Kamatera's ToS is explicit that all fees are non-refundable once you're a paying customer, including for services suspended or terminated mid-month. The 30-day free trial (worth up to $100 on one server, with a fully refundable $10 deposit) is the only safety net. Multiple reviewers also describe billing continuing after cancellation — close your account through the official cancellation flow, screenshot confirmation, and remove the payment method afterwards.
IPv6 is a paid add-on at $1/IP/mo, not bundled
Every comparable provider in this tier (DigitalOcean, Vultr, Linode, Hetzner) bundles IPv6 free. Kamatera charges $1/IPv6/mo, capped at 4 per server, and you have to add IPv6 after server creation rather than at provisioning time. For dual-stack production workloads this is a small but real recurring tax that should be added to every cost comparison. Historical reviews from before late-2024 saying 'Kamatera doesn't support IPv6' are out of date.
No managed databases, no managed Kubernetes, no native object storage / CDN
Kamatera is unmanaged compute first, full stop. There's no managed PostgreSQL/MySQL/Redis (run it yourself on a Type B/D, or use Aiven/Neon/Supabase), no managed Kubernetes (Kubernetes is a one-click app deploying onto your own servers — the control plane is yours), no S3-compatible object storage (Block Storage at $5/100 GB is the closest native option), and no native CDN (use Cloudflare or BunnyCDN). If you need the full DigitalOcean-style managed-services ladder, Kamatera is the wrong abstraction.
Type A 'Availability' is shared/burstable — not the right tier for production
The headline $4/mo entry uses Type A (shared CPU, no thread guarantee), which Kamatera markets as 'Budget Friendly' / availability-class. Multiple reviewers report variable performance on Type A instances and recommend Type B (General Purpose, dedicated thread) as the actual production-recommended tier — which jumps the 2 vCPU / 4 GB build to $39/mo. Map your workload to the right type before assuming the $4/mo number is comparable to DigitalOcean's $6 Basic.
Trust score breakdown
Scored across six dimensions — an editorial estimate, not a guarantee.
Why 65/100
Console is functional but reviewers consistently flag it as 'not for beginners' — no shared-hosting wrappers, no cPanel-by-default, and the $4/mo Type A presets sometimes ship with quirky preinstalled stacks that need cleanup. The flip side is that experienced devops users get exactly the granularity they want: fully a-la-carte sizing, hourly billing, REST API, Terraform provider, and one-click apps for Docker / Kubernetes / WordPress. Documentation is thinner than DigitalOcean's tutorials site.
Why 76/100
Modern Intel Xeon Platinum / Cascade Lake / Ice Lake hardware, NVMe SSD on newer nodes, up to 10 Gbit/s networking per instance, and Type B/D guarantee dedicated CPU thread vs the shared Type A. VPSBenchmarks and Cybernews 2026 reviews report ~186 ms response times and solid synthetic numbers. Geographically the 23-location footprint cuts latency for global workloads better than EU-centric Hetzner. Type A 'Availability' instances under-perform Type B noticeably — pick the right type for the workload.
Why 78/100
99.95% guaranteed uptime SLA with service-credit refunds, ~30-year operational track record (OMC Group since 1995), and ~20 datacenters that have not had a high-profile public outage in the recent past. Independent benchmarks during 2026 reviews reported 100% uptime over multi-week windows. The drag is account-level: a small but recurring number of Trustpilot reviews describe servers becoming unreachable while the dashboard shows 'ready', and recovery windows (24-72 hours to download data on a flagged account) are tight.
Why 65/100
Three 24/7/365 channels (chat, phone, ticket) with English-only human staffing, and infrastructure-side responses are typically fast and competent. The bottom of the distribution is consistent across Trustpilot, HostAdvice, and WebsitePlanet: abuse-desk responsiveness is poor when receivers report spam from Kamatera IPs, PTR requests are sometimes denied with the boilerplate 'site does not appear to be real and fully functional', and billing/cancellation issues recur. Trustpilot 4.2-4.8 over ~1,200+ reviews — strong overall, but the negative cluster is specific and reproducible.
Why 65/100
Pricing calculator shows the all-in number before you create a server, the 99.95% SLA is public, and the ToS / acceptable-usage policies are linked in the footer. The opacity is around add-on tax (IPv6 surcharge, Windows licence layered on top, control panel licences) that aren't surfaced in the $4/mo headline, the lack of a public status page comparable to status.hetzner.com or status.digitalocean.com, and the manual / discretionary handling of PTR and abuse decisions with terse reasoning when denials happen.
Why 75/100
Entry pricing at $4/mo (1 vCPU / 1 GB / 20 GB / 5 TB) is competitive but Type A is shared/burstable — direct apples-to-apples is the Type B 2 vCPU / 4 GB / 20 GB at $39/mo, which is materially more expensive than Hetzner CPX22 (€7.99) or DigitalOcean Basic 2/4 ($24). The win is configurability — you can build a 6 vCPU / 12 GB / 80 GB exact-fit machine where DigitalOcean would force you to a fixed tier. Add-on tax (Windows licence, IPv6, backups, daily snapshots) erodes the entry-price headline.
Operating systems & apps
Control panel: Kamatera Console (own); custom ISO upload supported; full REST API; Terraform provider available · full root access
Operating systems
One-click apps
Datacenter locations
23 regions worldwide.
Support
Response time: No published SLA — community reports range from minutes (chat, infrastructure issues) to hours/days (abuse, PTR, billing escalations)
Verified Apr 27, 2026
Community pulse
Sentiment in 2026 is bimodal but skews positive on the surface. Trustpilot sits in the 4.2-4.8 range across ~1,200+ reviews, with the positive cluster praising 24/7 human support, fast deployment, and the granular vCPU/RAM sizing. The negative cluster is specific and reproducible across Trustpilot, HostAdvice, and WebsitePlanet: persistent IP-blacklist / spam-reputation issues on AS36007, terse PTR denials for self-hosted mail, abuse-desk slowness when receivers report spam from Kamatera IPs, and a handful of billing-after-cancellation stories. Reddit / r/webhosting framing is 'powerful and flexible, but read the negative reviews first — not for beginners'. The open port 25 by default is a recurring positive on r/selfhosted and self-hosting blogs.
Sentiment verified Apr 27, 2026
Recent changes
How Kamatera compares
Top-rated alternatives on the board.
UpCloud
€3 / $3.50 /mo
25 on req
Linode (Akamai Cloud)
$5/mo
25 on req
Hetzner Cloud
€3.99/mo
25 on req
DigitalOcean
$4/mo
25 blocked