diff --git a/packages/hoppscotch-backend/src/admin/admin.service.spec.ts b/packages/hoppscotch-backend/src/admin/admin.service.spec.ts
index a7ebc0682..3cee03e96 100644
--- a/packages/hoppscotch-backend/src/admin/admin.service.spec.ts
+++ b/packages/hoppscotch-backend/src/admin/admin.service.spec.ts
@@ -121,6 +121,7 @@ describe('AdminService', () => {
           NOT: {
             inviteeEmail: {
               in: [dbAdminUsers[0].email],
+              mode: 'insensitive',
             },
           },
         },
@@ -229,7 +230,10 @@ describe('AdminService', () => {
 
       expect(mockPrisma.invitedUsers.deleteMany).toHaveBeenCalledWith({
         where: {
-          inviteeEmail: { in: [invitedUsers[0].inviteeEmail] },
+          inviteeEmail: {
+            in: [invitedUsers[0].inviteeEmail],
+            mode: 'insensitive',
+          },
         },
       });
       expect(result).toEqualRight(true);
diff --git a/packages/hoppscotch-backend/src/admin/admin.service.ts b/packages/hoppscotch-backend/src/admin/admin.service.ts
index 0bed66132..982b7c79a 100644
--- a/packages/hoppscotch-backend/src/admin/admin.service.ts
+++ b/packages/hoppscotch-backend/src/admin/admin.service.ts
@@ -89,12 +89,17 @@ export class AdminService {
     adminEmail: string,
     inviteeEmail: string,
   ) {
-    if (inviteeEmail == adminEmail) return E.left(DUPLICATE_EMAIL);
+    if (inviteeEmail.toLowerCase() == adminEmail.toLowerCase()) {
+      return E.left(DUPLICATE_EMAIL);
+    }
     if (!validateEmail(inviteeEmail)) return E.left(INVALID_EMAIL);
 
     const alreadyInvitedUser = await this.prisma.invitedUsers.findFirst({
       where: {
-        inviteeEmail: inviteeEmail,
+        inviteeEmail: {
+          equals: inviteeEmail,
+          mode: 'insensitive',
+        },
       },
     });
     if (alreadyInvitedUser != null) return E.left(USER_ALREADY_INVITED);
@@ -159,7 +164,7 @@ export class AdminService {
     try {
       await this.prisma.invitedUsers.deleteMany({
         where: {
-          inviteeEmail: { in: inviteeEmails },
+          inviteeEmail: { in: inviteeEmails, mode: 'insensitive' },
         },
       });
       return E.right(true);
@@ -189,6 +194,7 @@ export class AdminService {
         NOT: {
           inviteeEmail: {
             in: userEmailObjs.map((user) => user.email),
+            mode: 'insensitive',
           },
         },
       },
diff --git a/packages/hoppscotch-backend/src/shortcode/shortcode.service.ts b/packages/hoppscotch-backend/src/shortcode/shortcode.service.ts
index e6a02fdb1..e86423053 100644
--- a/packages/hoppscotch-backend/src/shortcode/shortcode.service.ts
+++ b/packages/hoppscotch-backend/src/shortcode/shortcode.service.ts
@@ -299,7 +299,10 @@ export class ShortcodeService implements UserDataHandler, OnModuleInit {
       where: userEmail
         ? {
             User: {
-              email: userEmail,
+              email: {
+                equals: userEmail,
+                mode: 'insensitive',
+              },
             },
           }
         : undefined,
diff --git a/packages/hoppscotch-backend/src/team-invitation/team-invitation.service.ts b/packages/hoppscotch-backend/src/team-invitation/team-invitation.service.ts
index f7749070f..db2927499 100644
--- a/packages/hoppscotch-backend/src/team-invitation/team-invitation.service.ts
+++ b/packages/hoppscotch-backend/src/team-invitation/team-invitation.service.ts
@@ -75,12 +75,13 @@ export class TeamInvitationService {
     if (!isEmailValid) return E.left(INVALID_EMAIL);
 
     try {
-      const teamInvite = await this.prisma.teamInvitation.findUniqueOrThrow({
+      const teamInvite = await this.prisma.teamInvitation.findFirstOrThrow({
         where: {
-          teamID_inviteeEmail: {
-            inviteeEmail: inviteeEmail,
-            teamID: teamID,
+          inviteeEmail: {
+            equals: inviteeEmail,
+            mode: 'insensitive',
           },
+          teamID,
         },
       });
 
diff --git a/packages/hoppscotch-backend/src/user/user.service.spec.ts b/packages/hoppscotch-backend/src/user/user.service.spec.ts
index b5093831c..26f56780c 100644
--- a/packages/hoppscotch-backend/src/user/user.service.spec.ts
+++ b/packages/hoppscotch-backend/src/user/user.service.spec.ts
@@ -149,7 +149,7 @@ beforeEach(() => {
 describe('UserService', () => {
   describe('findUserByEmail', () => {
     test('should successfully return a valid user given a valid email', async () => {
-      mockPrisma.user.findUniqueOrThrow.mockResolvedValueOnce(user);
+      mockPrisma.user.findFirst.mockResolvedValueOnce(user);
 
       const result = await userService.findUserByEmail(
         'dwight@dundermifflin.com',
@@ -158,7 +158,7 @@ describe('UserService', () => {
     });
 
     test('should return a null user given a invalid email', async () => {
-      mockPrisma.user.findUniqueOrThrow.mockRejectedValueOnce('NotFoundError');
+      mockPrisma.user.findFirst.mockResolvedValueOnce(null);
 
       const result = await userService.findUserByEmail('jim@dundermifflin.com');
       expect(result).resolves.toBeNone;
diff --git a/packages/hoppscotch-backend/src/user/user.service.ts b/packages/hoppscotch-backend/src/user/user.service.ts
index 26018894b..6a53f8a99 100644
--- a/packages/hoppscotch-backend/src/user/user.service.ts
+++ b/packages/hoppscotch-backend/src/user/user.service.ts
@@ -62,16 +62,16 @@ export class UserService {
    * @returns Option of found User
    */
   async findUserByEmail(email: string): Promise<O.None | O.Some<AuthUser>> {
-    try {
-      const user = await this.prisma.user.findUniqueOrThrow({
-        where: {
-          email: email,
+    const user = await this.prisma.user.findFirst({
+      where: {
+        email: {
+          equals: email,
+          mode: 'insensitive',
         },
-      });
-      return O.some(user);
-    } catch (error) {
-      return O.none;
-    }
+      },
+    });
+    if (!user) return O.none;
+    return O.some(user);
   }
 
   /**