SpamExperts KnowledgebaseFeature Preview

MailBox Overview (Preview)

The Mailbox Overview (Preview) will replace the Local recipients and the Email Alias pages. This provides more functionality than the current pages. With this feature, you are able to auto-discover addresses via recipient callout verification, control whether newly discovered mailboxes are filtered, and manage mailbox filtering, archiving, and aliases in a central location.

In the Mailbox Overview (Preview) at domain level, you will find 3 sections:

Configuration tab

This allows you to create your setup:

  • Maximum mailboxes: You can specify how many mailboxes can be added to the list, either automatically by discovery, automatically via LDAP Sync, or manually

  • Mailboxes options:

    • Automatically discover mailboxes: if this is enabled, then when a valid recipient is found, it is added to the list

    • Accept mail only for specific mailboxes: if this is enabled, and the Automatically discover mailboxes is also enabled, then newly discovered addresses are still added to the list. However, if the Automatically discover mailboxes option is disabled, then only the addresses that are already added will be able to accept email. 

    • Filter by default: controls whether mail for mailboxes that are not in the list on the ‘Mailboxes’ tab, or are in the list but are set to use the recommended value, will be filed.

Mailboxes tab

In this section you can review the mailboxes that you either manually added or that were automatically discovered. 


To see all mailboxes, simply use the “Show Results” button without specifying any query rules. If you want to see only mailboxes matching certain criteria, you may add those using the “New rule” button.

This section also allows you to: 

  • Add mailboxes manually

  • Add mailboxes via CSV

  • Export the existing entries to CSV

To search for existing entries, you need to add Query Rules. The available search rules are: Mailbox and Filtered status. 

You can also action on the existing entries by using the drop down arrow to the left of the entry. 

The available actions are: 

  • Edit

  • Remove

  • Export as CSV

Mailbox Aliases tab

In this tab you may add, edit, or remove aliases. 

A mailbox alias rewrites email from one address at a domain to another address at the same domain. It is also possible to rewrite all addresses at one domain to another domain, and to combine both forms of alias.

For example, if you have as a domain alias for, and alias@ as a mailbox alias for user@, then any mail directed to or will use logging, quarantine, and filtering settings of the primary mailbox,

If direct delivery for email and domain aliases is enabled, then the final delivery of the message will be done to the original version of the address. Otherwise, the delivery will be to the primary mailbox.

  • If you wish to catch all mail at this domain and direct it to a single address, use '*' in the 'Alias' field and the address you want it rewritten as in the 'Mailbox' field.

  • Note that you cannot use wildcards in the 'Alias' field, other than a single '*'. The alias address 'user*' means the alias address 'user*', not all addresses that start with 'user'.

  • Only a single mailbox rewrite is done, ie. you cannot have rewritten to and then to

To add an alias, you can do this via the Add Alias option:

As this is done at domain level the domain is already prefilled. 

  • Mailbox: The main email address. You need to add the local part only (the part in front of the @ sign)

  • Alias: The alias of the main address. You need the local part only (the part in front of the @ sign)

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