diff --git a/apps/api/package.json b/apps/api/package.json
index 00c518e1..2f092233 100644
--- a/apps/api/package.json
+++ b/apps/api/package.json
@@ -35,6 +35,7 @@
     "pino": "catalog:",
     "pino-pretty": "catalog:",
     "thirdweb": "catalog:",
+    "uuid": "catalog:",
     "viem": "catalog:"
   },
   "devDependencies": {
diff --git a/apps/api/prisma/migrations/20241211082958_profile_email/migration.sql b/apps/api/prisma/migrations/20241211082958_profile_email/migration.sql
new file mode 100644
index 00000000..081d5601
--- /dev/null
+++ b/apps/api/prisma/migrations/20241211082958_profile_email/migration.sql
@@ -0,0 +1,2 @@
+-- DropIndex
+DROP INDEX "public"."user_profile_email_key";
diff --git a/apps/api/prisma/schema.prisma b/apps/api/prisma/schema.prisma
index 32b7cbc0..f6184f37 100644
--- a/apps/api/prisma/schema.prisma
+++ b/apps/api/prisma/schema.prisma
@@ -72,7 +72,7 @@ model UserProfile {
 
   // Fields
   // Contact
-  email String? @unique
+  email String?
 
   // TreasureTag
   tag          String?
diff --git a/apps/api/src/routes/auth.ts b/apps/api/src/routes/auth.ts
index e3d06c6f..31ed9ce9 100644
--- a/apps/api/src/routes/auth.ts
+++ b/apps/api/src/routes/auth.ts
@@ -7,6 +7,7 @@ import {
 import type { FastifyPluginAsync } from "fastify";
 import { type GetUserResult, defineChain } from "thirdweb";
 import { isZkSyncChain } from "thirdweb/utils";
+import { v4 as uuidv4 } from "uuid";
 
 import "../middleware/chain";
 import "../middleware/swagger";
@@ -126,18 +127,18 @@ export const authRoutes =
         });
 
         let userId: string;
-        let thirdwebUser: GetUserResult;
+        let thirdwebUser: GetUserResult | null;
         if (foundUserSmartAccount) {
           const thirdwebUserDetails = await getThirdwebUser({
             ecosystemWalletAddress:
               foundUserSmartAccount.ecosystemWalletAddress,
           });
 
+          // TODO: switch to throwing an error when Thirdweb issues are resolved
           if (!thirdwebUserDetails) {
-            throwUnauthorizedError(
-              `No Thirdweb user found for ecosystem wallet ${foundUserSmartAccount.ecosystemWalletAddress}`,
+            console.warn(
+              `No user details found for ecosystem wallet ${foundUserSmartAccount.ecosystemWalletAddress}`,
             );
-            return;
           }
 
           userId = foundUserSmartAccount.userId;
@@ -168,26 +169,29 @@ export const authRoutes =
             ecosystemWalletAddress: adminWalletAddress,
           });
 
+          // TODO: switch to throwing an error when Thirdweb issues are resolved
           if (!thirdwebUserDetails) {
-            throwUnauthorizedError(
-              `No Thirdweb user found for admin wallet ${adminWalletAddress}`,
+            console.warn(
+              `No user details found for admin wallet ${adminWalletAddress}`,
             );
-            return;
           }
 
+          const externalUserId =
+            thirdwebUserDetails?.userId ?? `temp-${uuidv4()}`;
+
           const newUserSmartAccount = await db.userSmartAccount.create({
             data: {
               chainId,
               address,
               ecosystemWalletAddress: adminWalletAddress,
-              // If Thirdweb user ID is present, look for existing user to connect. Otherwise create new user
+              // Look for existing user to connect, otherwise create a new user
               user: {
                 connectOrCreate: {
                   where: {
-                    externalUserId: thirdwebUserDetails.userId,
+                    externalUserId,
                   },
                   create: {
-                    externalUserId: thirdwebUserDetails.userId,
+                    externalUserId,
                   },
                 },
               },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 846e11e4..2dc5ca4e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -330,6 +330,9 @@ importers:
       thirdweb:
         specifier: 'catalog:'
         version: 5.74.0(@aws-sdk/client-kms@3.699.0)(@types/react-dom@18.3.1)(@types/react@18.3.13)(encoding@0.1.13)(react-dom@18.3.1(react@18.3.1))(react@18.3.1)(typescript@5.7.2)(zod@3.23.8)
+      uuid:
+        specifier: 'catalog:'
+        version: 11.0.3
       viem:
         specifier: 'catalog:'
         version: 2.21.53(typescript@5.7.2)(zod@3.23.8)