When a host creates a fundraiser, they will be notified every time they receive a donation. To update your notification preferences, you can select the link at the bottom of the Donation Notification email or visit your Impact Hub and update through the "Users" tab.
Donation Notification Email
Through both of these, you'll be able to update how frequently you'd like to receive notifications - either every donation, or a daily, weekly or monthly summary. You are also able to select multiple options, based on your preference.