how can we send email alert in group or team memebr

• Create email alerts for case teams so that each time a case is created or updated, team members are notified.

• Available in: Salesforce Classic (not available in all org's) and Lightning Experience
• Available in: Enterprise, Performance, Unlimited, and Developer Editions

• Customize ApplicationANDManage Users
• To create or change workflow rules: Customize Application
• To create or change email alerts: Customize Application

Create email templates for notifications.

Set up workflow rules that specify which actions on a case send email alerts to team members.

• From Setup, enter Workflow Rules in the Quick Find box, then select Workflow Rules.
• Click New Rule.
• From Select object, choose Case and click Next.
• Enter a rule name.
• Choose the evaluation criteria. To ensure that every case is evaluated for an email alert, we recommend that you set the evaluation criteria to Evaluate the rule when a record is: created, and every time it’s edited.
• Enter your rule criteria. We recommend that you choose criteria are met and select the criteria that a case must match to send email alerts. For example, if you want team members to receive an email alert each time a case’s status is set to New, set the criteria to Case: Status equals New.
• Click Save & Next.

Add email alerts to your workflow rule’s criteria.

• Click Add Workflow Action and choose New Email Alert.
• Enter a description and unique name for the email alert. Because you chose Case as the object for the workflow rule, an object appears as read-only.
• Choose an email template.
• Select who receives email alerts from the workflow rule. To select all members of a case team, choose Case Team from Recipient Type, and add the team as selected recipients. You can enter up to five more email addresses.
• Click Save.

Activate the workflow rule and its email alert.

• From Setup, enter Workflow Rules in the Quick Find box, then select Workflow Rules
• Click Activate next to the name of the rule.