Email integration with PEC and MAILGUN services using api call.

src/main/java/net/gepafin/tendermanagement/service/feignClient/MailgunFeignClient.java

@@ -0,0 +1,24 @@
+package net.gepafin.tendermanagement.service.feignClient;
+
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.List;
+
+@FeignClient(name = "mailgunClient", url = "${mailGun_base_url}")
+public interface MailgunFeignClient {
+    @PostMapping("/v3/{domain}/messages")
+    ResponseEntity<Void> sendEmail(
+            @PathVariable("domain") String domain,
+            @RequestParam("from") String from,
+            @RequestParam("to") List<String> to,
+            @RequestParam("subject") String subject,
+            @RequestParam("html") String htmlBody,
+            @RequestHeader("Authorization") String authorizationHeader);
+}
+
+