diff --git a/internal/util/util.go b/internal/util/util.go
index 4b0fb10..2ee6620 100644
--- a/internal/util/util.go
+++ b/internal/util/util.go
@@ -1,6 +1,9 @@
 package util
 
 import (
+	"crypto/rand"
+	"math/big"
+	"net/mail"
 	"strconv"
 	"strings"
 )
@@ -23,3 +26,32 @@ func HasPrefixes(src string, prefixes ...string) bool {
 	}
 	return false
 }
+
+// ValidateEmail validates the email.
+func ValidateEmail(email string) bool {
+	if _, err := mail.ParseAddress(email); err != nil {
+		return false
+	}
+	return true
+}
+
+var letters = []rune("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+// RandomString returns a random string with length n.
+func RandomString(n int) (string, error) {
+	var sb strings.Builder
+	sb.Grow(n)
+	for i := 0; i < n; i++ {
+		// The reason for using crypto/rand instead of math/rand is that
+		// the former relies on hardware to generate random numbers and
+		// thus has a stronger source of random numbers.
+		randNum, err := rand.Int(rand.Reader, big.NewInt(int64(len(letters))))
+		if err != nil {
+			return "", err
+		}
+		if _, err := sb.WriteRune(letters[randNum.Uint64()]); err != nil {
+			return "", err
+		}
+	}
+	return sb.String(), nil
+}
diff --git a/internal/util/util_test.go b/internal/util/util_test.go
new file mode 100644
index 0000000..75f5e15
--- /dev/null
+++ b/internal/util/util_test.go
@@ -0,0 +1,31 @@
+package util
+
+import (
+	"testing"
+)
+
+func TestValidateEmail(t *testing.T) {
+	tests := []struct {
+		email string
+		want  bool
+	}{
+		{
+			email: "t@gmail.com",
+			want:  true,
+		},
+		{
+			email: "@yourselfhosted.com",
+			want:  false,
+		},
+		{
+			email: "1@gmail",
+			want:  true,
+		},
+	}
+	for _, test := range tests {
+		result := ValidateEmail(test.email)
+		if result != test.want {
+			t.Errorf("Validate Email %s: got result %v, want %v.", test.email, result, test.want)
+		}
+	}
+}
diff --git a/plugin/idp/oauth2/oauth2.go b/plugin/idp/oauth2/oauth2.go
index 1d5be6a..2c0be80 100644
--- a/plugin/idp/oauth2/oauth2.go
+++ b/plugin/idp/oauth2/oauth2.go
@@ -99,7 +99,7 @@ func (p *IdentityProvider) UserInfo(token string) (*idp.IdentityProviderUserInfo
 		return nil, errors.Errorf("the field %q is not found in claims or has empty value", p.config.FieldMapping.Identifier)
 	}
 
-	// Best effort to map optional fields
+	// Best effort to map optional fields.
 	if p.config.FieldMapping.DisplayName != "" {
 		if v, ok := claims[p.config.FieldMapping.DisplayName].(string); ok {
 			userInfo.DisplayName = v
@@ -108,10 +108,5 @@ func (p *IdentityProvider) UserInfo(token string) (*idp.IdentityProviderUserInfo
 	if userInfo.DisplayName == "" {
 		userInfo.DisplayName = userInfo.Identifier
 	}
-	if p.config.FieldMapping.Email != "" {
-		if v, ok := claims[p.config.FieldMapping.Email].(string); ok {
-			userInfo.Email = v
-		}
-	}
 	return userInfo, nil
 }
diff --git a/plugin/idp/oauth2/oauth2_test.go b/plugin/idp/oauth2/oauth2_test.go
index 0965a3e..92eb920 100644
--- a/plugin/idp/oauth2/oauth2_test.go
+++ b/plugin/idp/oauth2/oauth2_test.go
@@ -140,7 +140,6 @@ func TestIdentityProvider(t *testing.T) {
 			FieldMapping: &storepb.IdentityProviderConfig_FieldMapping{
 				Identifier:  "sub",
 				DisplayName: "name",
-				Email:       "email",
 			},
 		},
 	)
diff --git a/proto/api/v1/auth_service.proto b/proto/api/v1/auth_service.proto
index 49d0b86..95386e1 100644
--- a/proto/api/v1/auth_service.proto
+++ b/proto/api/v1/auth_service.proto
@@ -46,7 +46,7 @@ message SignUpRequest {
 
 message SignInWithSSORequest {
   // The name of the SSO provider.
-  int32 idp_name = 1;
+  string idp_name = 1;
   // The code to sign in with.
   string code = 2;
   // The redirect URI.
diff --git a/proto/api/v1/workspace_service.proto b/proto/api/v1/workspace_service.proto
index 7cb246d..3ab7a30 100644
--- a/proto/api/v1/workspace_service.proto
+++ b/proto/api/v1/workspace_service.proto
@@ -73,8 +73,7 @@ message IdentityProviderConfig {
 
   message FieldMapping {
     string identifier = 1;
-    string email = 2;
-    string display_name = 3;
+    string display_name = 2;
   }
 
   message OAuth2Config {
diff --git a/proto/gen/api/v1/README.md b/proto/gen/api/v1/README.md
index b5569cb..974405e 100644
--- a/proto/gen/api/v1/README.md
+++ b/proto/gen/api/v1/README.md
@@ -522,7 +522,7 @@
 
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
-| idp_name | [int32](#int32) |  | The name of the SSO provider. |
+| idp_name | [string](#string) |  | The name of the SSO provider. |
 | code | [string](#string) |  | The code to sign in with. |
 | redirect_uri | [string](#string) |  | The redirect URI. |
 
@@ -1464,7 +1464,6 @@
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | identifier | [string](#string) |  |  |
-| email | [string](#string) |  |  |
 | display_name | [string](#string) |  |  |
 
 
diff --git a/proto/gen/api/v1/auth_service.pb.go b/proto/gen/api/v1/auth_service.pb.go
index b8f4aa2..b84fab8 100644
--- a/proto/gen/api/v1/auth_service.pb.go
+++ b/proto/gen/api/v1/auth_service.pb.go
@@ -184,7 +184,7 @@ type SignInWithSSORequest struct {
 	unknownFields protoimpl.UnknownFields
 
 	// The name of the SSO provider.
-	IdpName int32 `protobuf:"varint,1,opt,name=idp_name,json=idpName,proto3" json:"idp_name,omitempty"`
+	IdpName string `protobuf:"bytes,1,opt,name=idp_name,json=idpName,proto3" json:"idp_name,omitempty"`
 	// The code to sign in with.
 	Code string `protobuf:"bytes,2,opt,name=code,proto3" json:"code,omitempty"`
 	// The redirect URI.
@@ -223,11 +223,11 @@ func (*SignInWithSSORequest) Descriptor() ([]byte, []int) {
 	return file_api_v1_auth_service_proto_rawDescGZIP(), []int{3}
 }
 
-func (x *SignInWithSSORequest) GetIdpName() int32 {
+func (x *SignInWithSSORequest) GetIdpName() string {
 	if x != nil {
 		return x.IdpName
 	}
-	return 0
+	return ""
 }
 
 func (x *SignInWithSSORequest) GetCode() string {
@@ -307,7 +307,7 @@ var file_api_v1_auth_service_proto_rawDesc = []byte{
 	0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x22, 0x68, 0x0a, 0x14, 0x53, 0x69, 0x67,
 	0x6e, 0x49, 0x6e, 0x57, 0x69, 0x74, 0x68, 0x53, 0x53, 0x4f, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
 	0x74, 0x12, 0x19, 0x0a, 0x08, 0x69, 0x64, 0x70, 0x5f, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20,
-	0x01, 0x28, 0x05, 0x52, 0x07, 0x69, 0x64, 0x70, 0x4e, 0x61, 0x6d, 0x65, 0x12, 0x12, 0x0a, 0x04,
+	0x01, 0x28, 0x09, 0x52, 0x07, 0x69, 0x64, 0x70, 0x4e, 0x61, 0x6d, 0x65, 0x12, 0x12, 0x0a, 0x04,
 	0x63, 0x6f, 0x64, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x63, 0x6f, 0x64, 0x65,
 	0x12, 0x21, 0x0a, 0x0c, 0x72, 0x65, 0x64, 0x69, 0x72, 0x65, 0x63, 0x74, 0x5f, 0x75, 0x72, 0x69,
 	0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x72, 0x65, 0x64, 0x69, 0x72, 0x65, 0x63, 0x74,
diff --git a/proto/gen/api/v1/workspace_service.pb.go b/proto/gen/api/v1/workspace_service.pb.go
index 8852ebb..5a90786 100644
--- a/proto/gen/api/v1/workspace_service.pb.go
+++ b/proto/gen/api/v1/workspace_service.pb.go
@@ -659,8 +659,7 @@ type IdentityProviderConfig_FieldMapping struct {
 	unknownFields protoimpl.UnknownFields
 
 	Identifier  string `protobuf:"bytes,1,opt,name=identifier,proto3" json:"identifier,omitempty"`
-	Email       string `protobuf:"bytes,2,opt,name=email,proto3" json:"email,omitempty"`
-	DisplayName string `protobuf:"bytes,3,opt,name=display_name,json=displayName,proto3" json:"display_name,omitempty"`
+	DisplayName string `protobuf:"bytes,2,opt,name=display_name,json=displayName,proto3" json:"display_name,omitempty"`
 }
 
 func (x *IdentityProviderConfig_FieldMapping) Reset() {
@@ -702,13 +701,6 @@ func (x *IdentityProviderConfig_FieldMapping) GetIdentifier() string {
 	return ""
 }
 
-func (x *IdentityProviderConfig_FieldMapping) GetEmail() string {
-	if x != nil {
-		return x.Email
-	}
-	return ""
-}
-
 func (x *IdentityProviderConfig_FieldMapping) GetDisplayName() string {
 	if x != nil {
 		return x.DisplayName
@@ -867,112 +859,110 @@ var file_api_v1_workspace_service_proto_rawDesc = []byte{
 	0x6f, 0x76, 0x69, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x06, 0x63, 0x6f,
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 }
 
 var (
diff --git a/proto/gen/apidocs.swagger.yaml b/proto/gen/apidocs.swagger.yaml
index 20064b6..5c5dc0a 100644
--- a/proto/gen/apidocs.swagger.yaml
+++ b/proto/gen/apidocs.swagger.yaml
@@ -57,8 +57,7 @@ paths:
           description: The name of the SSO provider.
           in: query
           required: false
-          type: integer
-          format: int32
+          type: string
         - name: code
           description: The code to sign in with.
           in: query
@@ -808,8 +807,6 @@ definitions:
     properties:
       identifier:
         type: string
-      email:
-        type: string
       displayName:
         type: string
   apiv1IdentityProviderConfigOAuth2Config:
diff --git a/proto/gen/store/README.md b/proto/gen/store/README.md
index 927b9cd..759cf54 100644
--- a/proto/gen/store/README.md
+++ b/proto/gen/store/README.md
@@ -225,7 +225,6 @@
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | identifier | [string](#string) |  |  |
-| email | [string](#string) |  |  |
 | display_name | [string](#string) |  |  |
 
 
diff --git a/proto/gen/store/idp.pb.go b/proto/gen/store/idp.pb.go
index 4cb5506..0469525 100644
--- a/proto/gen/store/idp.pb.go
+++ b/proto/gen/store/idp.pb.go
@@ -202,8 +202,7 @@ type IdentityProviderConfig_FieldMapping struct {
 	unknownFields protoimpl.UnknownFields
 
 	Identifier  string `protobuf:"bytes,1,opt,name=identifier,proto3" json:"identifier,omitempty"`
-	Email       string `protobuf:"bytes,2,opt,name=email,proto3" json:"email,omitempty"`
-	DisplayName string `protobuf:"bytes,3,opt,name=display_name,json=displayName,proto3" json:"display_name,omitempty"`
+	DisplayName string `protobuf:"bytes,2,opt,name=display_name,json=displayName,proto3" json:"display_name,omitempty"`
 }
 
 func (x *IdentityProviderConfig_FieldMapping) Reset() {
@@ -245,13 +244,6 @@ func (x *IdentityProviderConfig_FieldMapping) GetIdentifier() string {
 	return ""
 }
 
-func (x *IdentityProviderConfig_FieldMapping) GetEmail() string {
-	if x != nil {
-		return x.Email
-	}
-	return ""
-}
-
 func (x *IdentityProviderConfig_FieldMapping) GetDisplayName() string {
 	if x != nil {
 		return x.DisplayName
@@ -371,49 +363,47 @@ var file_store_idp_proto_rawDesc = []byte{
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+	0x74, 0x65, 0x64, 0x2f, 0x73, 0x6c, 0x61, 0x73, 0x68, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
+	0x67, 0x65, 0x6e, 0x2f, 0x73, 0x74, 0x6f, 0x72, 0x65, 0xa2, 0x02, 0x03, 0x53, 0x53, 0x58, 0xaa,
+	0x02, 0x0b, 0x53, 0x6c, 0x61, 0x73, 0x68, 0x2e, 0x53, 0x74, 0x6f, 0x72, 0x65, 0xca, 0x02, 0x0b,
+	0x53, 0x6c, 0x61, 0x73, 0x68, 0x5c, 0x53, 0x74, 0x6f, 0x72, 0x65, 0xe2, 0x02, 0x17, 0x53, 0x6c,
+	0x61, 0x73, 0x68, 0x5c, 0x53, 0x74, 0x6f, 0x72, 0x65, 0x5c, 0x47, 0x50, 0x42, 0x4d, 0x65, 0x74,
+	0x61, 0x64, 0x61, 0x74, 0x61, 0xea, 0x02, 0x0c, 0x53, 0x6c, 0x61, 0x73, 0x68, 0x3a, 0x3a, 0x53,
+	0x74, 0x6f, 0x72, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/proto/store/idp.proto b/proto/store/idp.proto
index aea1544..c0d3196 100644
--- a/proto/store/idp.proto
+++ b/proto/store/idp.proto
@@ -22,8 +22,7 @@ message IdentityProviderConfig {
 
   message FieldMapping {
     string identifier = 1;
-    string email = 2;
-    string display_name = 3;
+    string display_name = 2;
   }
 
   message OAuth2Config {
diff --git a/server/route/api/v1/auth_service.go b/server/route/api/v1/auth_service.go
index 65f3f9a..7d7a09f 100644
--- a/server/route/api/v1/auth_service.go
+++ b/server/route/api/v1/auth_service.go
@@ -12,7 +12,11 @@ import (
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/types/known/emptypb"
 
+	"github.com/yourselfhosted/slash/internal/util"
+	"github.com/yourselfhosted/slash/plugin/idp"
+	"github.com/yourselfhosted/slash/plugin/idp/oauth2"
 	v1pb "github.com/yourselfhosted/slash/proto/gen/api/v1"
+	storepb "github.com/yourselfhosted/slash/proto/gen/store"
 	"github.com/yourselfhosted/slash/server/metric"
 	"github.com/yourselfhosted/slash/server/service/license"
 	"github.com/yourselfhosted/slash/store"
@@ -46,25 +50,91 @@ func (s *APIV1Service) SignIn(ctx context.Context, request *v1pb.SignInRequest)
 	if err := bcrypt.CompareHashAndPassword([]byte(user.PasswordHash), []byte(request.Password)); err != nil {
 		return nil, status.Errorf(codes.InvalidArgument, "unmatched email and password")
 	}
-
-	accessToken, err := GenerateAccessToken(user.Email, user.ID, time.Now().Add(AccessTokenDuration), []byte(s.Secret))
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to generate tokens, err: %s", err))
+	if err := s.doSignIn(ctx, user, time.Now().Add(AccessTokenDuration)); err != nil {
+		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to sign in, err: %s", err))
 	}
-	if err := s.UpsertAccessTokenToStore(ctx, user, accessToken, "user login"); err != nil {
-		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to upsert access token to store, err: %s", err))
-	}
-
-	if err := grpc.SetHeader(ctx, metadata.New(map[string]string{
-		"Set-Cookie": fmt.Sprintf("%s=%s; Path=/; Expires=%s; HttpOnly; SameSite=Strict", AccessTokenCookieName, accessToken, time.Now().Add(AccessTokenDuration).Format(time.RFC1123)),
-	})); err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to set grpc header, error: %v", err)
-	}
-
 	metric.Enqueue("user sign in")
 	return convertUserFromStore(user), nil
 }
 
+func (s *APIV1Service) SignInWithSSO(ctx context.Context, request *v1pb.SignInWithSSORequest) (*v1pb.User, error) {
+	identityProviderSetting, err := s.Store.GetWorkspaceSetting(ctx, &store.FindWorkspaceSetting{
+		Key: storepb.WorkspaceSettingKey_WORKSPACE_SETTING_IDENTITY_PROVIDER,
+	})
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to get workspace setting, err: %s", err))
+	}
+	if identityProviderSetting == nil || identityProviderSetting.GetIdentityProvider() == nil {
+		return nil, status.Errorf(codes.InvalidArgument, "identity provider not found")
+	}
+	var identityProvider *storepb.IdentityProvider
+	for _, idp := range identityProviderSetting.GetIdentityProvider().IdentityProviders {
+		if idp.Name == request.IdpName {
+			identityProvider = idp
+			break
+		}
+	}
+	if identityProvider == nil {
+		return nil, status.Errorf(codes.InvalidArgument, fmt.Sprintf("identity provider not found with name %s", request.IdpName))
+	}
+
+	var userInfo *idp.IdentityProviderUserInfo
+	if identityProvider.Type == storepb.IdentityProvider_OAUTH2 {
+		oauth2IdentityProvider, err := oauth2.NewIdentityProvider(identityProvider.Config.GetOauth2())
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to create oauth2 identity provider, err: %s", err))
+		}
+		token, err := oauth2IdentityProvider.ExchangeToken(ctx, request.RedirectUri, request.Code)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to exchange token, err: %s", err))
+		}
+		userInfo, err = oauth2IdentityProvider.UserInfo(token)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to get user info, err: %s", err))
+		}
+	}
+
+	email := userInfo.Identifier
+	if !util.ValidateEmail(email) {
+		return nil, status.Errorf(codes.InvalidArgument, fmt.Sprintf("invalid email %s", email))
+	}
+	user, err := s.Store.GetUser(ctx, &store.FindUser{
+		Email: &email,
+	})
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to find user by email %s", email))
+	}
+	if user == nil {
+		userCreate := &store.User{
+			Email:    email,
+			Nickname: userInfo.DisplayName,
+			// The new signup user should be normal user by default.
+			Role: store.RoleUser,
+		}
+		password, err := util.RandomString(20)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to generate random password, err: %s", err))
+		}
+		passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to generate password hash, err: %s", err))
+		}
+		userCreate.PasswordHash = string(passwordHash)
+		user, err = s.Store.CreateUser(ctx, userCreate)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to create user, err: %s", err))
+		}
+	}
+	if user.RowStatus == store.Archived {
+		return nil, status.Errorf(codes.PermissionDenied, fmt.Sprintf("user has been archived with email %s", email))
+	}
+
+	if err := s.doSignIn(ctx, user, time.Now().Add(AccessTokenDuration)); err != nil {
+		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to sign in, err: %s", err))
+	}
+	return convertUserFromStore(user), nil
+}
+
 func (s *APIV1Service) SignUp(ctx context.Context, request *v1pb.SignUpRequest) (*v1pb.User, error) {
 	if !s.Profile.Public {
 		return nil, status.Errorf(codes.PermissionDenied, "sign up is not allowed")
@@ -105,23 +175,30 @@ func (s *APIV1Service) SignUp(ctx context.Context, request *v1pb.SignUpRequest)
 	if err != nil {
 		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to create user, err: %s", err))
 	}
+	metric.Enqueue("user sign up")
+	if err := s.doSignIn(ctx, user, time.Now().Add(AccessTokenDuration)); err != nil {
+		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to sign in, err: %s", err))
+	}
+	return convertUserFromStore(user), nil
+}
 
-	accessToken, err := GenerateAccessToken(user.Email, user.ID, time.Now().Add(AccessTokenDuration), []byte(s.Secret))
+func (s *APIV1Service) doSignIn(ctx context.Context, user *store.User, expireTime time.Time) error {
+	accessToken, err := GenerateAccessToken(user.Email, user.ID, expireTime, []byte(s.Secret))
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to generate tokens, err: %s", err))
+		return status.Errorf(codes.Internal, fmt.Sprintf("failed to generate tokens, err: %s", err))
 	}
 	if err := s.UpsertAccessTokenToStore(ctx, user, accessToken, "user login"); err != nil {
-		return nil, status.Errorf(codes.Internal, fmt.Sprintf("failed to upsert access token to store, err: %s", err))
+		return status.Errorf(codes.Internal, fmt.Sprintf("failed to upsert access token to store, err: %s", err))
 	}
 
+	cookie := fmt.Sprintf("%s=%s; Path=/; Expires=%s; HttpOnly; SameSite=Strict", AccessTokenCookieName, accessToken, time.Now().Add(AccessTokenDuration).Format(time.RFC1123))
 	if err := grpc.SetHeader(ctx, metadata.New(map[string]string{
-		"Set-Cookie": fmt.Sprintf("%s=%s; Path=/; Expires=%s; HttpOnly; SameSite=Strict", AccessTokenCookieName, accessToken, time.Now().Add(AccessTokenDuration).Format(time.RFC1123)),
+		"Set-Cookie": cookie,
 	})); err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to set grpc header, error: %v", err)
+		return status.Errorf(codes.Internal, "failed to set grpc header, error: %v", err)
 	}
 
-	metric.Enqueue("user sign up")
-	return convertUserFromStore(user), nil
+	return nil
 }
 
 func (*APIV1Service) SignOut(ctx context.Context, _ *v1pb.SignOutRequest) (*emptypb.Empty, error) {
diff --git a/server/route/api/v1/workspace_service.go b/server/route/api/v1/workspace_service.go
index 7f4de55..9fe60c7 100644
--- a/server/route/api/v1/workspace_service.go
+++ b/server/route/api/v1/workspace_service.go
@@ -231,7 +231,6 @@ func convertIdentityProviderConfigFromStore(identityProviderConfig *storepb.Iden
 					Scopes:       oauth2Config.Scopes,
 					FieldMapping: &v1pb.IdentityProviderConfig_FieldMapping{
 						Identifier:  oauth2Config.FieldMapping.Identifier,
-						Email:       oauth2Config.FieldMapping.Email,
 						DisplayName: oauth2Config.FieldMapping.DisplayName,
 					},
 				},
@@ -266,7 +265,6 @@ func convertIdentityProviderConfigToStore(identityProviderConfig *v1pb.IdentityP
 					Scopes:       oauth2Config.Scopes,
 					FieldMapping: &storepb.IdentityProviderConfig_FieldMapping{
 						Identifier:  oauth2Config.FieldMapping.Identifier,
-						Email:       oauth2Config.FieldMapping.Email,
 						DisplayName: oauth2Config.FieldMapping.DisplayName,
 					},
 				},