Smart Filters help you to classify emails automatically as Newsletters and Notification emails. Further, there are Smart Filter Actions to create tasks directly from filters based on conditions
Generally, the automated emails can be broadly classified as ‘Notifications’ and ‘Newsletters’. The Smart filters in Zoho Mail can automatically detect the Notifications, and Newsletter emails based on certain header information. When you navigate to the Filters section in the settings, you get an alert about the Smart Filters. The Smart Filters get created, only after you click 'Yes'.
When you enable Smart Filters, two built-in Filters are created and enabled in your account, and the emails are moved to the respective folders based on the header analysis. Along with these filters, one folder and one tag for each filter will also be created. The emails processed by these filters will be classified to the related folder and the relevant tag will be added to the email.
ZMNewsletter - You might have subscribed to Newsletters from various websites. If you regularly follow a website, say, sethgodin.com, and would regularly like to receive Newsletters on the same, you might subscribe to their newsletters. All these newsletters will be processed by the ZMNewsletter filter.
ZMNotification - If you've turned on email notifications for the various services that you're using, these emails will be processed by the ZMNotification filter and land in that folder.
You can choose to disable one or all of the smart filters or move them to a lower order, in case it conflicts with any of your custom filters.
If you want to disbale either one or both of your Smart Filters, click the tick mark under the Status menu. You will later have to click the tick mark again to enable it. When the filter is the disabled state, it won't conflict with any of your existing filters.
Smart Filters cannot be deleted. You can only disable it if necessary.
The recommendations sections of the Filters automatically suggests you Filters with predefined Conditions and Actions, based on your email addresses, aliases and the Groups in which you are a member.
You can customise your filter preferences by clicking on the icon across each filter. After making the necessary edits here, you can save your filter.