You can decide whether volunteers get notifications when you enter the hours they worked for an opportunity. Notifications are enabled by default, but you may choose to disable notifications if:
Volunteers do not want to receive email notifications
You want to limit or control the number of emails your volunteers receive
To manage volunteer notifications:
Open your organization. If you are in more than one organization, open the organization where you want to manage volunteer notifications.
On the organization home page, click Opportunities.
Click an opportunity.
Click General Settings, Notifications & Permissions
.
Click Notification Settings.
In the Volunteer Notification Settings section, turn notifications on or off.
Note: Changes to notifications apply to the opportunity you’ve selected. Each opportunity has its own set of notifications.