Do I need to create a new dashboard for each email when connecting my Mailchimp account to Bold BI?

No, you do not need to create a new dashboard for every single email. When you connect your Mailchimp account to a dashboard in Bold BI, the analytics data will include statistics for all the emails you send out. You can access the combined analytics for all your emails through a single dashboard.

For an example of a dashboard that tracks email campaign performance, you can view the following link: Email Campaign Performance Dashboard.

This dashboard utilizes the Mailchimp REST API for reports, which you can find more about here: Mailchimp API Reports.