Synology MailPlus Server review

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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.

Synology MailPlus Server pros and cons

• 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

Synology MailPlus Server fact sheet, pricing and score →

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Last updated 21 Oct 2026 · How we research and update