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Incoming Rules

Incoming Rules are a set of conditions based on which administrators can decide which emails get to reach a user's mailbox. The rules can be associated with a specific user, a set of users or for the entire organization. Once a rule is enabled, emails get validated against the conditions specified in the rule before getting delivered to the intended recipient's mailbox.

Note:

  • It is mandatory to enable Organization Rules from the Spam Processing section in the Admin Console.
  • The Incoming Rules feature will be rolled out in a phased manner and be available only for organizations that use one of our paid plans.
  • If you want the option enabled for your organization, please reach out to us at support@zohomail.com.

Create Incoming Rule

Follow these steps to create an Incoming Rule:

  1. Log in to Zoho Mail Admin Console and select Security & Compliance on the left pane.
  2. Navigate to Rules and select Incoming Rules.
  3. Click the Create now button to add the first rule or click Create under All Rules for subsequent rules.
    Create incoming rule
  4. Provide a rule name and a description for the rule.
  5. If required, set an Expiry Date.
  6. Select the Condition Type from the available options:
    • AND - Only if the incoming emails satisfy all the conditions, the preferred action will be performed.
    • OR - Even if the incoming emails satisfy one of the conditions you provide, the preferred action will be performed.
    • Advanced - You can combine both AND & OR condition types, within a single condition, for the preferred action.
    • No Condition - When chosen, all the emails you receive will go through the preferred action.
  7. Select one or more Conditions, the Operating parameter and the corresponding Action.
  8. Choose the users to whom you want to apply the rule from the Apply To drop-down:
    • All users - The rule will be applied to all the users in your organization.
    • All users except selected users - The rule will be applied to all the users except the ones added to the list.
    • Selected Users - The rule will be applied to the specific set of users you add.
  9. Skip to this step if you chose All users.
  10. Click the Select users button to include or exclude users.
  11. Select the users you want to add to the list and click Submit. You can also remove a user from the list by clicking the Delete icon next to the user.
  12. If needed, fill in the Remarks column. These remarks will be linked to the relevant operational details within the Admin Report’s Audit Log for future reference.
  13. Review your rule and do one of the following:
    • Create and enable rule - Your rule will not only be created but also be enabled automatically to start processing emails with respect to its conditions and actions.
    • Create rule - Your rule will only be created and not enabled. That means if you want the rule to be applied to the emails you receive, you will have to manually activate it. 
      incoming rule
  14. After creation, all incoming rules will automatically be listed under the following top menus based on the type of filtering or actions specified:
    • The All Rules tab allows you to view the list of all incoming rules and create new rules.
    • Connection Filter Rules display rules that you have configured to filter out incoming emails at the authentication level based on the sender details.
    • Content Filter Rules list rules that filter emails based on the content of the email, such as email language or attachment restrictions.
    • Forwarding Rules shows all rules where you've specified email forwarding as the action for the condition.
      rules top menu
  15. Select the preferred tab from the top menu, and all corresponding rules will be listed for easy access and management. Hover over a rule in the list to rearrange it using the drag and drop icon. Rearranging them automatically changes the rule processing priority based on the order they are currently listed.

Available Conditions

Zoho Mail provides multiple conditions based on which you can filter incoming emails. There can be more than one condition for a single rule depending on your organization's requirement. The various conditions are listed in the tables that follow:

General Validation

ParameterDescriptionValue
MIME Message ID*The ID that can be gathered from a MIME email's headerClick Add values, enter the desired MIME value and click Add.
MIME size (in MB)The size of the non-text attachment specified in MBEnter a value between 1 to 40.
SubjectThe subject of the emailClick Add values, enter the desired subject and click Add.

Note:

*MIME message - Multipurpose Internet Mail Extensions supports non-text email attachments. A MIME header is added to the original email header from where you can gather the unique content ID/message ID used to identify the message.

Attachment Validation

ParameterDescriptionValue
Has attachmentChecks if any file is attachedSelect Yes or No from the drop-down.
Attachment size (in MB)The size of the attached file in MBEnter a value between 1 to 40.
Attachment typeThe type of attached fileClick Select attachments, add the attachment types and click Add.

Content Validation

ParameterDescriptionValue
ContentThe content of the emailClick Add values, enter the content to be validated and click Add.
Email languageThe language in which the email was composedClick Select languages, add the desired languages and click Add.
Has embed tagsThe existence of embed tags in the email contentSelect Yes or No from the drop-down.
Has form tagsThe existence of form tags in the email contentSelect Yes or No from the drop-down.
Has frame tagsThe existence of iframe tags in the email contentSelect Yes or No from the drop-down.
Has JavaScript contentThe existence of javascript content in the email contentSelect Yes or No from the drop-down.
Has macrosThe existence of macros in the email contentSelect Yes or No from the drop-down.
Has object tagsThe existence of object tags in the email contentSelect Yes or No from the drop-down.
Has shortened URLThe existence of shortened URLs in the email contentSelect Yes or No from the drop-down.
Has suspicious macrosThe existence of suspicious macros in the email contentSelect Yes or No from the drop-down.
Has web bugsThe existence of web bugs in incoming email contentSelect Yes or No from the drop-down.
Originating countryThe country from which the email was sentClick Select countries, add the desired countries and click Add.
URL domain in contentThe domain names of the URLs available in email contentClick Add domains, enter one or more domain names and click Add.
URL in contentThe existence of specified URLs in the email contentClick Add values, provide the URL content to be validated and click Add.

Domain Validation

ParameterDescriptionValue
SPF verificationThe result of SPF verification

Select the desired authentication result from the available list:

  • Pass
  • Soft fail
  • Neutral
  • Fail
  • None
DKIM verificationThe result of DKIM verification

Select the desired authentication result from the available list:

  • Pass
  • Neutral
  • Fail
DMARC verificationThe result of DMARC verification

Select the desired authentication result from the available list:

  • Pass
  • Fail

Header Validation

ParameterDescriptionValue
HeaderThe email header that needs to be verified for the provided valuesEnter the Header Name and Header Value.
X-Mailer*The desktop client from which the email was sentClick Add values, enter the X-Mailer you wish to validate and click Add.

Note:

*X-Mailer - Specifies which desktop client (For example, Apple client, Thunderbird, etc) was used to draft or send the email. Can be found in the email header.

Malware Validation

ParameterDescriptionValue
Is bulk emailValidates if the email received is a bulk emailSelect Yes or No from the drop-down.
Is authenticated senderValidates whether the sender's identity is authenticatedSelect Yes or No from the drop-down.

Recipient Validation

ParameterDescriptionValue
Recipient countValidates the number of recipients in the emailProvide a value between 1 to 100.
Recipient domainValidates the domain address of the recipientClick Add domains, enter one or more domain names and click Add.
Recipient's email policyThe email policy associated with the recipientsSelect the email policy from the drop-down.
Recipient's groupThe groups that the user is part ofSelect the preferred group from the drop-down.
To/CC email addressThe email address in the To/CC fieldClick Add email addresses, enter the desired email address and click Add.

Sender Validation

ParameterDescriptionValue
Is external senderChecks if the sender is not part of the organizationSelect Yes or No from the drop-down.
New senderChecks if the email is received for the first time from the senderSelect Yes or No from the drop-down.
Reply-to email addressThe reply-to address of an incoming emailClick Add email addresses, enter the desired email address and click Add.
Return path domainThe reverse-path/ bounce address's domainClick Add domains, enter one or more domain names and click Add.
Return path email addressThe reverse-path/ bounce address of an incoming emailClick Add email addresses, enter the desired email address and click Add.
Sender display nameThe display name of the senderClick Add values, enter the user's display name and click Add.
Sender DNSThe DNS address of the senderClick Add values, provide the sender DNS and click Add.
Sender domainThe domain address of the email senderClick Add domains, enter the sender domain name and click Add.
Sender email addressThe 'from' address of the email senderClick Add email addresses, enter the desired email address and click Add.
Sender IP addressThe IP address of the email senderEnter the sender's IP address that you wish to validate.

Once you select the desired conditions, proceed to this step to complete setting up the rule.

Operating Parameters

OperatorsDescription
isThe respective parameter in the incoming email should exactly match the given criteria value.
is notThe respective parameter in the incoming email should not match the given criteria value.
containsThe respective parameter in the incoming email doesn't have to be an exact match but will pass even if it contains the given criteria value.
does not containThe respective parameter in the incoming email doesn't have to be an exact match but will pass if it does not contain the given criteria value.
begins withThe respective parameter in the incoming email should begin with the given criteria value.
ends withThe respective parameter in the incoming email should end with the given criteria value.
is emptyThe respective parameter in the incoming email should be empty.
is not emptyThe respective parameter in the incoming email should not be empty.
matchesThe respective parameter in the incoming email should match the regular expression pattern.
does not matchThe respective parameter in the incoming email should not match the regular expression pattern.
yesThe given condition should be true.
noThe given condition should be false.
is greater thanThe respective parameter in the incoming email should only be greater than the given criteria value.
is lesser thanThe respective parameter in the incoming email should only be lesser than the given criteria value.
is greater than or equal toThe respective parameter in the incoming email can be greater than or equal to the given criteria value.
is lesser than or equal toThe respective parameter in the incoming email can be lesser than or equal to the given criteria value.

After selecting the Conditions and the Operating parameters, provide the values with respect to the chosen conditions that need to be verified against. Once done, proceed to select the Actions that needs to be performed for the emails with the chosen conditions.

Available Actions

The emails that match the specified conditions will be processed as per the actions defined in the rule. Select the necessary action and, if required, provide a value as given in the table that follows:

ActionDescriptionValue
Add BCC and deliver to recipientAdds the BCC email address and delivers the emailClick Add BCC addresses, select the desired users to whom you wish to send a copy and click Add.
Add custom headerAdds a custom value in the headerClick Add header details, provide the header name and value and click Add.
Append text to subjectAppends a text in the subjectClick Add subject, enter the text which you want to be appended to the subject and click Add.
Forward the emailForwards a copy of the email to the specified email addressClick Add forward addresses, select the desired users to whom you wish to forward the email and click Add.
Move to quarantineMoves the email to QuarantineN/A
Move to spamAll the emails that satisfy the given condition/s will be moved to the spam folder of the recipient's inbox.N/A
Move to spam & Add custom headerEmails will be moved to spam folder along with the custom header valueClick Add header details, provide the header name and value and click Add.
Move to spam & Append text to subjectEmails will be moved to spam folder along with a text appended to the subjectClick Add subject, enter the text which you want to be appended to the subject and click Add.
Move to spam & Show warning messageEmails will be moved to spam folder along with a warning messageClick Add warning message, enter the warning text and click Add.
None (Allow email)No action will be taken for the emails that satisfy the given condition/s.N/A
Permanent RejectAll the emails that satisfy the given condition/s will not be accepted by our servers and will be rejected permanently removing the chances of delivery retriesN/A
Reject without sending bounce emailEmail gets rejected, but no bounce email will be sent to the senderN/A

Rule Processing and Priority

You can add any number of Incoming Rules to process different types of incoming emails. When there are multiple filters, the sequence of processing will be based on the priority of filters. The filter with the highest priority (1) will take precedence over the filters with lower priority (2). Once an email matches the conditions of a particular rule, the actions specified in the rule will be applied to the email. The same email will not be scrutinized against the subsequent rules in the list.

Modify Incoming Rule

You can modify the existing incoming rules based on your requirements. Follow these steps to edit a rule:

  1. Log in to Zoho Mail Admin Console and select Security & Compliance on the left pane.
  2. Navigate to Rules and select Incoming Rules.
  3. Select the desired rule and click Edit from the top right corner.
  4. Make the desired changes and click Update.

Additionally, you can search and edit the incoming rules based on the associated users. Navigate to the search bar and select the applicable to or not applicable to parameters from the listing as per your requirements. Choose a specific user from the list and press enter. All the incoming rules associated with or not associated with that particular user will be displayed. You can then select the rules from the list and make the required changes.

Enable or Disable a Rule

To enable or disable a rule, follow these instructions:

  1. Log in to Zoho Mail Admin Console and select Security & Compliance on the left pane.
  2. Navigate to Rules and select Incoming Rules.
  3. Toggle the status button to   ON or   OFF in order to enable or disable a rule.

Remove Rules

There can be situations where you no longer require a rule or a rule might have expired. In such scenarios, you can remove them using the delete option. Follow these steps to delete a rule:

  1. Log in to Zoho Mail Admin Console and select Security & Compliance on the left pane.
  2. Navigate to Rules and select Incoming Rules.
  3. To remove a rule:
    1. Hover over an existing or expired rule and click the   delete icon.
    2. Alternatively, you can select the desired rules, click Delete on the top menu and choose the required option:
      • Delete selected rules
      • Delete all expired rules
      • Delete all rules
    3. Click Delete in the confirmation dialog that appears.

Still can't find what you're looking for?

Write to us: support@zohomail.com