Customize URL Parameters (UTM/Google Analytics)
You can access this feature in the Email section of your Digest editor, under "Advanced Settings."
Under "Options" look for URL Parameters. Turn the feature on, specify your domain name, and adjust the parameters to best fit your needs. Digesto prepopulates the parameters with default values, but feel free to adapt them to your needs.

Default value is set to:
utm_source=Marketo&utm_medium=Email&utm_campaign={{digest_name}}-{{digest_send_date}}
Whereby:
{{digest_name}} = Name of your Digest (at top of Digest editor page).
{{digest_send_date}} = Digest send date.
{{digest_name}} = Name of your Digest (at top of Digest editor page).
{{digest_send_date}} = Digest send date.