To send the wallet pass to your customers you could use our API, where you will be able to generate direct download wallet pass links to send to your customers.
This link have a different behaviour than the links generate it by the platform on their emails, you could read more about that on this guide.
The endpoint is the following ones:
curl -X POST "https://api.jericommerce.com/v1/program/{{program_id}}/customers/token?token_type={{miliseconds}}&token_type=download&email={{customer_email}}" \2--H "api-key: {{API Key}}"