diff --git a/src/main/java/com/goormdari/domain/team/application/TeamService.java b/src/main/java/com/goormdari/domain/team/application/TeamService.java
index ec3c1f5..1dbda4d 100644
--- a/src/main/java/com/goormdari/domain/team/application/TeamService.java
+++ b/src/main/java/com/goormdari/domain/team/application/TeamService.java
@@ -93,17 +93,15 @@ public CreateTeamResponse createNewTeam(final String username, final CreateTeamR
     }
 
 
-    public Message sendCode(String username, Long guestId) {
+    public Message sendCode(String username, String email) {
 
         User hostUser = userRepository.findByUsername(username)
                 .orElseThrow(() -> new NotFoundException("User not found"));
 
-        User guestUser = userRepository.findById(guestId)
-                .orElseThrow(() -> new NotFoundException("Guest not found"));
 
         String joinCode = userRepository.findJoinCodeByUserId(hostUser.getId());
 
-        emailClient.sendOneEmail(hostUser.getNickname(), guestUser.getEmail(), joinCode);
+        emailClient.sendOneEmail(hostUser.getNickname(), email, joinCode);
 
         return Message.builder()
                 .message("이메일 전송에 성공했습니다.")
diff --git a/src/main/java/com/goormdari/domain/team/presentation/TeamController.java b/src/main/java/com/goormdari/domain/team/presentation/TeamController.java
index 2d042e9..7891355 100644
--- a/src/main/java/com/goormdari/domain/team/presentation/TeamController.java
+++ b/src/main/java/com/goormdari/domain/team/presentation/TeamController.java
@@ -56,17 +56,17 @@ public ResponseCustom<CreateTeamResponse> createTeam(
             @ApiResponse(responseCode = "200", description = "팀(방) 참여코드 전달 성공", content = {@Content(mediaType = "application/json", schema = @Schema(implementation = Message.class))}),
             @ApiResponse(responseCode = "400", description = "팀(방) 참여코드 전달 실패", content = {@Content(mediaType = "application/json", schema = @Schema(implementation = ErrorResponse.class))}),
     })
-    @PostMapping("/email/{guestId}")
+    @PostMapping("/email/{email}")
     public ResponseCustom<Message> sendJoinCode(
             @Parameter(description = "Accesstoken을 입력해주세요.", required = true) @RequestHeader("Authorization") String token,
-            @Parameter(description = "초대할 유저의 id를 입력해주세요.", required = true) @PathVariable Long guestId
+            @Parameter(description = "초대할 유저의 id를 입력해주세요.", required = true) @PathVariable String email
     ) {
         String jwt = token.startsWith("Bearer ") ? token.substring(7) : token;
         if (!jwtUtil.validateToken(jwt)) {
             throw new IllegalArgumentException("Invalid token");
         }
         String username = jwtUtil.extractUsername(jwt);
-        return ResponseCustom.OK(teamService.sendCode(username, guestId));
+        return ResponseCustom.OK(teamService.sendCode(username, email));
     }
 
     @Operation(summary = "참여코드로 팀(방) 참여", description = "참여코드로 팀(방)에 참여합니다.")