Honest fit assessment
We advise plainly on whether Stalwart suits your scale, team and requirements — or whether Mailcow, Microsoft 365 or Google Workspace fits better.
Stalwart
Stalwart Mail Server Support and Migration
Stalwart is a modern, efficient mail server that brings SMTP, IMAP, JMAP and built-in security into one Rust-based stack — and we are among the few offering business-grade support for it. We plan your Stalwart deployment, migrate you from Mailcow, Zimbra or Postfix, configure it correctly, and keep it secured and monitored. We will also tell you honestly whether Stalwart is the right fit for your environment.
- Deployment and configuration
- Migration from Mailcow, Zimbra, Postfix
- Security and hardening
- Monitoring and ongoing support
Common problems
Where a Stalwart project needs a specialist.
Stalwart is newer than the platforms it replaces, so the challenges are about getting the deployment right, migrating cleanly, and running it with the same discipline you would expect of any production mail server.
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Few people know it well
Stalwart is modern and capable, but deep operational experience with it is rare, so getting confident, honest guidance is hard.
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Risky migration in
Moving from Mailcow, Zimbra or Postfix means carrying mailboxes, history and authentication across without losing mail.
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Configuration depth
SMTP, IMAP, JMAP, queues, storage and the built-in security stack need configuring correctly, not left at first-run defaults.
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Deliverability from day one
A new server starts with no reputation, so SPF, DKIM, DMARC, rDNS and IP warm-up have to be right before real mail flows.
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Security not yet tuned
The built-in anti-spam, authentication and rate controls are powerful but only protect you once they are configured for your traffic.
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No one watching
Without monitoring of queues, certificates, storage and reputation, a new deployment can fail quietly in its first weeks.
We bring honest, hands-on Stalwart expertise: we tell you whether it fits, plan and execute the deployment and migration, configure and harden it properly, and watch it — so a modern mail server is a confident choice, not a gamble.
How Mailoza helps
Stalwart, deployed and run with confidence.
We treat Stalwart as production infrastructure from the first decision, and we are candid about where it shines and where another platform might suit you better.
Clean deployment
Stalwart stood up correctly — SMTP, IMAP, JMAP, storage, queues and TLS configured for your environment, not left at defaults.
Safe migration
Mailboxes and history moved from Mailcow, Zimbra or Postfix with a staged cutover and a tested rollback, zero data loss as the commitment.
Security configured
The built-in anti-spam, authentication, DKIM signing and rate controls tuned to a business-grade standard for your traffic.
Deliverability from day one
SPF, DKIM, DMARC, rDNS and a sensible IP warm-up so your new server lands in the inbox from the start.
Watched and maintained
Queues, certificates, storage and reputation monitored, with upgrades and changes handled on a tested path.
Services for this platform
Every Mailoza service, applied to Stalwart.
Pick the service that matches your situation — each links to its full detail page, all delivered to one business-grade standard on your Stalwart stack.
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Email Infrastructure
Design, deploy and operate your Stalwart mail server to a business-grade standard.
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Email Migration
Migrate to Stalwart from Mailcow, Zimbra or Postfix without losing a message.
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Managed Email Support
Ongoing operation, monitoring and a defined response for your Stalwart server.
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Email Security
Hardening, SPF/DKIM/DMARC at enforcement and anti-BEC defences for Stalwart.
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Email Deliverability
Reputation, authentication and warm-up so your Stalwart mail reaches the inbox.
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Emergency Support
Rapid help when your Stalwart server is down, blacklisted or breached.
Migration options
Migrating to Stalwart, safely.
We carry your mail and history onto Stalwart in a staged cutover so your business keeps working throughout — with a tested rollback, every time.
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From Mailcow
Move from a Mailcow stack to Stalwart, preserving mailboxes, folders and history, with DKIM and authentication re-established cleanly.
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From Zimbra
Migrate off Zimbra — including ageing or unsupported deployments — onto a modern, efficient Stalwart server.
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From Postfix / Dovecot
Consolidate a traditional Postfix and Dovecot stack into Stalwart, simplifying the operational footprint.
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DNS and reputation cutover
MX, rDNS, SPF, DKIM and DMARC changed in a safe, staged order with IP warm-up so deliverability holds from day one.
Security & deliverability
Hardened and deliverable from the start.
Stalwart includes a strong built-in security and anti-spam stack — it protects you once it is configured for your traffic. Here is what we put in place.
- SPF, DKIM and DMARC configured and moved to enforcement with alignment
- Reverse DNS (rDNS) and a sensible IP warm-up for a new sending reputation
- TLS enforced with valid, auto-renewing certificates and expiry monitoring
- Stalwart's built-in anti-spam and content filtering tuned for your mail
- Authentication, rate limiting and connection controls against abuse
- Admin interface and host access locked down to least privilege
- Automated, encrypted backups with periodically tested restores
- Blacklist monitoring with prompt delisting when needed
We harden honestly. No one is ever "100% secure" — we make your server a hard target, keep it deliverable, and tell you the residual risk plainly.
Managed support
A modern mail server, kept production-ready.
A clean deployment solves today. Managed Stalwart keeps it current, deliverable and watched, so a newer platform stays a confident choice over time.
Operations owned
Upgrades, certificate renewals, configuration changes and capacity — handled on a tested path, not left to drift.
Continuous monitoring
Queues, certificates, storage, service health and reputation watched, with a defined response when something needs us.
Monthly health report
Plain-English proof your Stalwart server is healthy — what we ran, what we caught and what we fixed.
Information:
Honest about 24×7
Questions
Answers, in plain English.
Do you really support Stalwart? Most providers have never heard of it.
Yes. Stalwart is a modern, efficient mail server, and we are among the few offering genuine business-grade support for it. We deploy it, migrate onto it, secure it and operate it — and we are honest about where it fits and where it does not.
Is Stalwart the right choice for us?
It depends on your scale, team and requirements, and we will tell you plainly. Stalwart is a strong fit for businesses that want a modern, efficient self-hosted stack with built-in security. If Mailcow, Microsoft 365 or Google Workspace suits you better, we will say so — we advise on what is right for you, not what pays us best.
Can you migrate us to Stalwart from Mailcow, Zimbra or Postfix?
Yes. We migrate from Mailcow, Zimbra, Postfix and Dovecot, and other platforms, with a staged cutover and a tested rollback. We preserve mailboxes, folders and history, and re-establish DKIM and authentication cleanly, with zero data loss as the commitment.
Will a brand-new Stalwart server have deliverability problems?
A new server starts with no sending reputation, which is why we set up SPF, DKIM, DMARC and rDNS correctly and warm the IP up sensibly before real mail flows. Done right, your mail lands in the inbox from day one.
How do you secure a Stalwart deployment?
Stalwart ships with a capable built-in security and anti-spam stack. We tune it for your traffic, enforce TLS with valid certificates, lock down admin and host access to least privilege, and add rate limiting and connection controls against abuse.
Do we keep control of our Stalwart server?
Always. It stays your server and your data on your infrastructure. We operate it with the access we need, which you can see and revoke at any time. Control is a core reason to self-host, and we respect it.
What if our Stalwart server has a problem after launch?
With managed support we are already watching queues, certificates, storage and reputation, so most problems are caught early. If something does break — down, blacklisted or breached — our Emergency Email Support responds fast, restores service and explains what happened.
Can you take over a Stalwart server we deployed ourselves?
Yes. We audit your existing deployment — configuration, security, backups, deliverability and monitoring — bring it to a business-grade standard, and take over its operation. You do not have to start again.
How is this priced?
On outcome and expertise, never per mailbox. Deployment and migration work is scoped to a fixed outcome; managed Stalwart is a predictable monthly commitment with clear, fair terms and no long lock-in.