Synology MailPlus Server
Synology MailPlus Server: A full-featured mail server for organizations already running compatible Synology NAS hardware. Ranked #6 of 31 in Email Server Software by our editors (8.6/10); pricing: Free plan; best for synology NAS users hosting organizational email.
At a glance
- Editor score8.6 / 10
- PricingFree plan
- Best forSynology NAS users hosting organizational email
- Free planYes
- DeploymentSelf-hosted
- Facts checked4 Oct 2026
Where it wins
- Supports SMTP, IMAP, and POP3 for mail-client access
- Migration from Microsoft Exchange and Google Workspace
- Directory integration, policy controls, filtering, and clustering
Where it doesn't
- Requires compatible Synology NAS hardware and self-hosted administration
- Only five email-account licenses are included with compatible NAS hardware
- License packs add cost, and pricing is not published on the official page
Our verdict on Synology MailPlus Server
Synology MailPlus Server turns compatible Synology NAS hardware into a self-hosted organizational email system. It suits small, mid-market, and enterprise teams that want to host custom or multiple domains and administer mail on their own infrastructure. Staff can connect through SMTP, IMAP, or POP3 clients, or use webmail and iOS and Android apps. Shared mailboxes, filters, labels, and priority mailboxes cover common collaboration needs alongside individual mail accounts.
Its strongest fit is organizations with an existing Synology environment or a reason to manage email on their own NAS. MailPlus integrates with Windows Active Directory and LDAP, and can migrate mail from Microsoft Exchange and Google Workspace. Synology Calendar, Contacts, and Chat provide adjacent ecosystem connections. Administrators can set user and group policies for login, traffic, and mail delivery, delegate server administration, and use spam filtering and antivirus protection. High-availability clustering is available for organizations that need a clustered deployment. These capabilities offer broad control, but also make this a more involved choice than a hosted mailbox service: the organization is responsible for its self-hosted email setup and administration.
The published offer includes five email-account licenses with compatible NAS hardware; additional accounts require perpetual license packs. The official page referenced for pricing does not publish pack prices, so prospective buyers should factor licensing into their NAS decision. The product is a good match for teams that want SMTP/IMAP/POP support, directory integration, migration options, and server control within Synology’s ecosystem. Organizations seeking a mail platform independent of Synology NAS hardware, or that prefer a hosted service rather than managing their own server, should consider alternatives.
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Synology MailPlus Server pricing
Synology MailPlus Server fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Deployment | Self-hosted |
| Mail transfer agent | Yes |
| Mailbox server | Yes |
| Integrated mail server | Yes |
| Email protocols | SMTP, IMAP, POP3 |
| Directory integration | Yes |
| Deployment | Self-hosted |
| Platforms | Web, iOS, Android |
| Compliance & security | GDPR |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: Windows Active Directory, LDAP, Microsoft Exchange, Google Workspace, Synology Calendar, Synology Contacts … |
| Pricing | Free plan (source) |
| Website | synology.com |
| Facts checked | 4 Oct 2026 |
Synology MailPlus Server integrations
Synology MailPlus Server lists 7 integrations on its own site.
- Windows Active Directory
- LDAP
- Microsoft Exchange
- Google Workspace
- Synology Calendar
- Synology Contacts
- Synology Chat
Alternatives to Synology MailPlus Server
- Microsoft Exchange OnlineManaged Exchange email with Outlook access, filtering, archiving, and migration tools.9.3
- Apache JamesA flexible self-hosted mail platform with broad protocol support and configurable storage.9.1
- DovecotA focused, self-hosted mailbox server with filtering, search, and migration tools.9.0
See all Synology MailPlus Server alternatives →
Synology MailPlus Server vs the competition
- Synology MailPlus Server vs Microsoft Exchange Online
- Synology MailPlus Server vs Apache James
- Synology MailPlus Server vs Dovecot
- Synology MailPlus Server vs IceWarp
- Synology MailPlus Server vs Zimbra Collaboration
- Synology MailPlus Server vs MailEnable
Compare Synology MailPlus Server with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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