diff --git a/server/resolvers/is_registered.go b/server/resolvers/is_registered.go
index 0366d1e..194197f 100644
--- a/server/resolvers/is_registered.go
+++ b/server/resolvers/is_registered.go
@@ -10,19 +10,24 @@ import (
 	"strings"
 )
 
+// IsRegisteredResolver is a resolver for registered checkup query
 // IsRegisteredResolver is a resolver for registered checkup query
 func IsRegisteredResolver(ctx context.Context, email string) (*model.Response, error) {
-	var res *model.Response
+	// Initialize the response object
+	res := &model.Response{}
 	res.Message = ""
-	email = strings.TrimSpace(refs.StringValue(&email))
+
+	// Convert email to lowercase
+	email = strings.ToLower(strings.TrimSpace(refs.StringValue(&email)))
 	if email == "" {
 		log.Debug("Email is required")
-		return res, fmt.Errorf(`email is required`)
+		return res, fmt.Errorf("email is required")
 	}
 
+	// Initialize logger with a field
 	log := log.WithField("email", email)
 
-	// find user with email
+	// Find user with email
 	existingUser, err := db.Provider.GetUserByEmail(ctx, email)
 	if err != nil {
 		log.Debug("Failed to get user by email: ", err)
@@ -33,11 +38,11 @@ func IsRegisteredResolver(ctx context.Context, email string) (*model.Response, e
 		if existingUser.EmailVerifiedAt != nil {
 			res.Message = "verified"
 			log.Debug("Email is already verified and signed up.")
-			return res, nil // fmt.Errorf(`%s has already signed up`, email)
+			return res, nil
 		} else if existingUser.ID != "" && existingUser.EmailVerifiedAt == nil {
 			res.Message = "not verified"
 			log.Debug("Email is already signed up. Verification pending...")
-			return res, nil // Errorf("%s has already signed up. please complete the email verification process or reset the password", email)
+			return res, nil
 		}
 	}