Reactivate Old Trial Users
Create a custom audience of users who went through a trial of your product but didn't upgrade. Show them ads announcing new features to encourage them to come back and give your product another shot. This audience should be more cost-effective to re-acquire than acquiring a cold user.
Step 1: Create a source
Add a Web JS source to your app/console/site to start tracking customer interactions.
Step 2: Create events
Create events to track trial activation and subscription events.
Step 3: Create a segment
Create your segment definition:
A and B
A: Users who have activated a trial
B: Users who have not subscribed to a product
Timeframe: this year till last x days (depends on the trial length)
Step 4: Create a destination
Create a messaging destination that is activated once the user enters the segment. Send an email or SMS offering a promotion to subscribe and continue your product.