4.0.0 org.dromara.sms4j sms4j-Email-plugin 3.1.0 org.dromara.sms4j sms4j-Email-api 3.1.0 sms4j-Email-api sms4j-Email-api Apache 2 https://www.apache.org/licenses/LICENSE-2.0.txt repo A business-friendly OSS license org.dromara.sms4j sms4j-Email-comm