NetCell MailGuard vs. Mimecast — self-hosted instead of a cloud subscription
Mimecast is a cloud email-security suite headquartered in London with US operations. NetCell MailGuard runs self-hosted on your server in Germany — your email stays in your infrastructure.
NetCell MailGuard processes email self-hosted on your server in Germany; Mimecast is a cloud service (London/USA). If you don't want to hand data storage to a vendor cloud or accept a foreign jurisdiction, the self-hosted model keeps you fully in control of your data.
Direct comparison
| Criterion | NetCell MailGuard | Mimecast |
|---|---|---|
| Deployment model | Self-hosted on your own server | Cloud / SaaS (vendor cloud) |
| HQ / jurisdiction | Made in Germany | London (UK) + US operations |
| US CLOUD Act | Not affected — runs on-prem | US operations — scope to be assessed legally case by case |
| Data location | Your server, made in Germany | 16 data centres in 7 countries (region per grid) |
| Anti-spam approach | Open rspamd stack (Bayes 6 classes, neural, RBLs, TLD reputation) | Proprietary (40+ scanning layers) |
| Attachment sandbox | Local, on your server | In the vendor cloud |
| High availability | Yes — active-active without a master, on your nodes | Vendor-side in the cloud |
| Cost model | Self-hosted; free edition for 1 domain, Pro as a plan | Per-user/year subscription (pricing on request) |
Frequently asked questions
What is the main difference to Mimecast?
MailGuard runs self-hosted on your server, Mimecast as a cloud service. With MailGuard, email, quarantine and logs stay in your own infrastructure in Germany.
Does data stay in Germany?
With MailGuard yes — email is processed on your own server and doesn't leave it. Mimecast operates a network of data centres across several countries with regional data residency per grid.
Mimecast and related trademarks belong to die Mimecast Limited. NetCell MailGuard has no business affiliation with die Mimecast Limited. Information without warranty, as of 2026; competitor feature scope, editions and terms may change and should be verified with the respective vendor.
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