You can use Journeys to learn about your contacts while they’re opting in so you can send more relevant messages later on.
Use the opportunity to ask a couple of questions and collect their preferences (storing the responses via Manage tags) so you can use them to segment your audience for the future.
Need some inspo? Check out our ✅Sign up/opt-in flows template
Global opt-out flow
To help your flows stay GDPR compliant, we recommend setting up a global opt-out flow using the Manage subscribers node.
Check it out here: Global opt-out flow