dotdigital integration is in beta testing, so functionality is only available to registered beta testers and may change in response to feedback. You can register as a beta tester here.
In Integrations > dotdigital > Sync you can configure a daily scheduled update for each of your dotdigital accounts.
Select the Constituent list you wish to update from, and the dotdigital address book you wish to update.
The scheduled updates are run at 9pm GMT each day.
Get an email summary
You can enable this in your email notifications within your Profile (top right of your screen).