We don't want our coworkers to see all of our e-mails. That's why each mailbox in Sugester can be marked as Private. All e-mails sent by private mailbox will be visible only for the owner of the mailbox and administrators of Sugester account.

By default other users will see titles of e-mails marked with padlock icon (🔒) only, but won't be able to read the message or select preview. If you also don't want them to see the title, select Settings > Helpdesk settings > Hide private post title and save the changes.

To set the mailbox as Private, select Settings > E-mails settings > E-mail boxes. At the bottom of the page select Private checkbox.

If you want the same user to have control over the chosen mailbox, just select this user in fields Users allowed to use this address and E-mails recipients, then hit Save.