Synology MailPlus Settings

Click your account in the upper-right corner and select Settings. In the pop-up window, you can configure Synology MailPlus settings related to mail layout and organization, mailboxes, protocols (e.g., SMTP and OpenPGP) for mail delivery, and more to suit your needs.

General

At Settings > General, you can configure the following settings related to mail layout and organization:

Theme Customization

At Settings > Theme Customization, you can choose a theme for your Synology MailPlus. There are built-in templates and background pictures to choose from.

Auto Reply/Forward

At Settings > Auto Reply/Forward, you can configure the following settings:

Mailbox

At Settings > Mailbox, you can add new mailboxes, as well as edit, delete, and share previously created mailboxes.

If you want to hide a mailbox, tick the checkbox under Hide.

Shared Mailbox

A personal mailbox can be shared with internal users/groups to centralize the email communication of a specific project.

To share your mailboxes with others:

You can share your mailboxes with internal users/groups.

  1. Right-click one of your mailboxes on the left panel.
  2. Click Share on the menu.
  3. Select users/groups to share this mailbox with. To add a user/group, click Add; to remove a user/group, select the unwanted one and click Delete.
  4. Assign each user/group access permissions for the shared mailbox:
    Permission Access Capability
    Owner
    (the creator of the shared mailbox)
    • View, manage, and reply to messages in the shared mailbox.
    • Manage the shared mailbox and all the sub-mailboxes.
    Manage
    • View, manage, and reply to messages in the shared mailbox.
    • Create, delete, and rename sub-mailboxes.
    • Delete the shared mailbox.
    • Share the shared mailbox with other users/groups and assign access permissions to them.
    Read/Write
    • View, manage, and reply to messages in the shared mailbox.
    • Create sub-mailboxes.
    Read only
    • View messages in the shared mailbox.
  5. Click OK to save the settings.
  6. The system will mark the shared mailbox with a group icon and send the intended users/groups an invitation to access the mailbox.

Note:

To view mailboxes shared from you:

Go to the Mailbox section on the left panel. Mailboxes will be marked with a group icon if they are shared with others.

To view mailboxes shared to you:

At Settings > Shared Mailbox, you can see the mailboxes shared to you and their subscription status.

  1. Go to the Shared Mailbox tab to see the mailboxes shared to you and the corresponding subscription status.
  2. You can change the subscription status of each shared mailbox:
  3. Click OK to save the settings.

Filter

At Settings > Filter, you can create, edit, and delete filters to make email management easier. All incoming or outgoing messages that meet the criteria will be marked or labeled according to your filter rules.

To create a filter:

  1. Click Add.
  2. Fill in at least one search criterion.
  3. Once you have added your criteria (and exceptions if needed), click Continue.
  4. Check the desired boxes so messages will be automatically marked or sent to specific mailboxes.
  5. Click OK to save your filter settings.

Note:

Priority Mailbox

At Settings > Priority Mailbox, you can set up a priority mailbox to display messages from various mailboxes or labels for centralized management.

  1. Tick the Enable priority mailbox checkbox.
  2. Click Edit to specify the settings below:
  3. To reorder the sections, click and hold a section and drop it to the desired position.
  4. Click OK to save the settings.

SMTP

At Settings > SMTP, you can add additional SMTP servers or edit existing ones. Your existing Synology MailPlus Server settings will be automatically set as the default SMTP server. No settings can be edited except for your Sender name.

Users can add other SMTP servers to send emails from Synology MailPlus. For example, you can add the Google SMTP server to send emails via your Google account on Synology MailPlus.

To add an SMTP server:

  1. Go to Settings > SMTP.
  2. Fill in the following information:

POP3 Fetch

At Settings > POP3 Fetch, click Add and enter custom POP3 servers or use predefined ones (e.g., Gmail) to fetch e-mails from different POP3 servers to Synology MailPlus. In this way, you can collectively receive and read all your emails in Synology MailPlus. To further ensure effective management, you can even set a mailbox, to which all the incoming messages from a specific server (e.g., Gmail) will be sent.

Note:

OpenPGP

OpenPGP (Pretty Good Privacy) is a key-based encryption technology used for email encryption.

At Settings > OpenPGP, you can enable OpenPGP, manage OpenPGP keys, and adjust OpenPGP related settings.

To generate OpenPGP keys:

  1. Tick Enable OpenPGP and click the Key Management button.
  2. Click Generate to generate a new key pair.
  3. Click OK to generate a pair of public and private keys.

To manage OpenPGP keys:

Administrator Settings

At Settings > Administrator Settings, the Synology MailPlus administrator can manage the following settings for all users:

Note:

Shared Contacts (Administrator Only)

The Shared Contacts page is not available on Synology MailPlus 2.2.0 or above versions because Synology Contacts takes over the features. For details, please refer to this article.

At Settings > Administrator Settings, all contact groups belonging to the account type of Synology MailPlus Server will appear on the Shared Contacts list. You can perform the following to customize the shared contacts that will be applied to all users of the same account type:

For Synology MailPlus Server with the account type set to Domain Users, the hierarchical structure of the organizational unit will be displayed under the Group field. Please follow the steps below if you want to set the account type to Domain Users:

  1. Sign in to the Synology NAS running Synology MailPlus Server with the administrator's credentials.
  2. Go to Control Panel > Domain/LDAP > Domain.
  3. Select Join domain and fill in the required information to join the Synology NAS to the desired domain.
  4. Click Apply to save the domain settings.
  5. Launch Synology MailPlus Server and go to Service > Protocol.
  6. Tick the checkbox of Enable SMTP and make sure the Account type is set to Domain Users.
  7. Click Apply to save the settings.
  8. All email addresses under the domain will appear under Shared Contacts.

Note:

Notification

At Settings > Notification, you can install extensions on your browser to receive push notifications from Synology MailPlus.

To enable push notifications:

  1. Click Install browser extension to let Synology MailPlus pair with your browser.
  2. After the installation, you can return to Synology MailPlus to specify which mailboxes, labels, and shared mailboxes need push notifications.
  3. Click Send a test message to see if your settings are correct.

Blacklist/Whitelist

At Settings > Blacklist/Whitelist, you can create a personal blacklist and whitelist to block or allow emails from specific addresses/domains.

To add an email address or a domain to the blacklist/whitelist:

  1. Click the Add button in the Blacklist or Whitelist page.
  2. Enter the email address/domain that you want to whitelist or blacklist.
  3. Click OK to save the settings.

To edit an email address or a domain on the blacklist/whitelist:

  1. Click on the email address/domain and click the Edit button.
  2. Click OK to save the settings.

To remove an email address or a domain from the blacklist/whitelist:

  1. Click on the email address/domain and click the Delete button.
  2. Click Yes in the confirmation dialog box.
  3. Click OK to save the settings.

Note: