Video Tutorial: Uploading your emails to OneSignal
In the Emailify export panel, select the OneSignal option from the dropdown list, then paste in a valid App ID and API key, which can be found on your OneSignal App ID and API key settings page.
When you're ready, click the Upload To OneSignal button to start exporting the emails you've selected from Figma to HTML, and have them automatically be uploaded to your OneSignal marketing templates.