[keycloak-user] Using your SPI provider instead of default one

Hello, There is something that I have missed in provider's documentation ( https://www.keycloak.org/docs/3.3/server_development/topics/providers.htm ). I've implemented my own SPI (EmailTemplateProvider -mock implementation that logs on console using slf4j instead of sending anything). I've dropped jar in deployments folder. I see message my SPI got registerd and it's listed in server info. However, when I try to register, a default (freemarker) email template provider is called. How can I choose, which SPI will be used for my realm? Or there can be only one? Best regards, Lukasz Lech