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Up your productivity with secure, private email

The MailPlus and MailPlus Server1 packages allow your business to set up a secure, reliable, and private mail server while giving your employees a web-based client for managing emails. In addition, MailPlus integrates seamlessly with Synology Chat and Synology Calendar to streamline communication and boost productivity.

Intuitive & Powerful MailPlus

MailPlus features an intuitive browser-based mail client—a powerful toolset for organizing emails, sharing the company address book, and adding events to Synology Calendar.

  • Works With Calendar

    Instantly creates a new event in Synology Calendar with a click on a date or time in email.

  • Priority Mailbox

    Shows emails from specific mailboxes or labels in one view for centralized management.

  • Shared Address Book

    When joining an LDAP server or Windows AD domain, MailPlus can make an address book accessible to all employees.

  • Works with Chat

    The Chat plug-in allows instant communication between you and your work partners.

  • Smart Filters

    Automatically sort and label incoming emails by custom rules.

Secure & Reliable MailPlus Server

MailPlus Server transforms your Synology NAS into a powerful, resilient mail server, and makes communication in and out of your workplace smooth, well-protected, and available at all times.

Easy Setup

A smart, streamlined setup procedure allows you to quickly build a mail system on a Synology NAS.

Security & Post-Audit

Integrates with Google's Safe Browsing and has an ever-evolving antivirus database to provide strong malware protection. In addition, it can keep suspicious mails in quarantine for post-auditing.

Mail Migration

Effortlessly migrates email from another mail server (i.e. Microsoft Exchange, Gmail,, Yahoo mail, and general IMAP servers) to your MailPlus Server.

Threat Monitor

Provides threat statistics of inbound and outbound mail, along with clear graphs for quick overview.

High-availability Design

During system upgrades or hardware replacements, you can complete manual switchover to the paired mail server in seconds, ensuring smooth and non-stop business service.

MailPlus mobile app

The MailPlus app is your mobile mail platform to manage mail on the go. It is now available for Android™ and iOS.

Would you like to know more

Licensing plan

MailPlus comes with five free accounts and allows for purchasing additional licenses according to business needs.

Choose the right NAS to run MailPlus

Looking for a plan that works best for your company? Find out how to select a suitable Synology NAS model to process your daily emails.


  1. For supported models, please see the pages related to MailPlus and MailPlus Server.