Make template nullable #275
Description
I am using SyliusMailer with transactional emails, where the provider is Brevo. The approach involves sending emails via a REST API, including the necessary data in JSON format within the request body.
In this setup, configuring emails in SyliusMailer does not require a Twig template. Given this use case, I would like to suggest removing the required constraint for templates in the configuration.
What do you think about removing required constraint on this configuration ?