Select Drip from the SumoMe List Builder > Services. Connect to your Drip account. Subscribers will be added to your Drip account when they submit your SumoMe form. You can set an event that will be recorded and tags that will be applied on submission.
To perform an action any time a subscriber is added via SumoMe, use the "Performed a custom event" workflow trigger using the event you entered in Step 1.