diff --git a/src/core/common/errors.ts b/src/core/common/errors.ts
index 3f5b8111d..49ae6e621 100644
--- a/src/core/common/errors.ts
+++ b/src/core/common/errors.ts
@@ -317,6 +317,11 @@ export enum ERROR_CODES {
 
   USER_ALREADY_PREMOD = "USER_ALREADY_PREMOD",
 
+  /**
+   * INVITE_INCLUDES_EXISTING_USER is returned when attempting to invite a user who already exists
+   */
+  INVITE_INCLUDES_EXISTING_USER = "INVITE_INCLUDES_EXISTING_USER",
+
   /**
    * REPEAT_POST is returned if a user attempts to post the same comment more than once
    * in a row within a given time frame
diff --git a/src/core/server/errors/index.ts b/src/core/server/errors/index.ts
index 6653aa9da..2b6924867 100644
--- a/src/core/server/errors/index.ts
+++ b/src/core/server/errors/index.ts
@@ -702,6 +702,17 @@ export class InviteRequiresEmailAddresses extends CoralError {
   }
 }
 
+export class InviteIncludesExistingUser extends CoralError {
+  constructor(email: string) {
+    super({
+      code: ERROR_CODES.INVITE_INCLUDES_EXISTING_USER,
+      context: {
+        pub: { email },
+      },
+    });
+  }
+}
+
 export class LiveUpdatesDisabled extends CoralError {
   constructor() {
     super({
diff --git a/src/core/server/errors/translations.ts b/src/core/server/errors/translations.ts
index 4dc296d21..2db1987b8 100644
--- a/src/core/server/errors/translations.ts
+++ b/src/core/server/errors/translations.ts
@@ -55,5 +55,6 @@ export const ERROR_TRANSLATIONS: Record<ERROR_CODES, string> = {
   PERSISTED_QUERY_NOT_FOUND: "error-persistedQueryNotFound",
   RAW_QUERY_NOT_AUTHORIZED: "error-rawQueryNotAuthorized",
   USER_ALREADY_PREMOD: "error-userAlreadyPremod",
+  INVITE_INCLUDES_EXISTING_USER: "error-inviteIncludesExistingUser",
   REPEAT_POST: "error-repeatPost",
 };
diff --git a/src/core/server/locales/en-US/errors.ftl b/src/core/server/locales/en-US/errors.ftl
index ae0e998ff..64907b9eb 100644
--- a/src/core/server/locales/en-US/errors.ftl
+++ b/src/core/server/locales/en-US/errors.ftl
@@ -57,4 +57,5 @@ error-passwordIncorrect = Incorrect password. Please try again.
 error-usernameAlreadyUpdated = You may only change your username once every { framework-timeago-time }.
 error-persistedQueryNotFound = The persisted query with ID { $id } was not found.
 error-rawQueryNotAuthorized = You are not authorized to execute this query.
+error-inviteIncludesExistingUser = A user with the email address { $email } already exists.
 error-repeatPost = Are you sure? This comment is very similar to your previous comment.
diff --git a/src/core/server/services/users/auth/invite.ts b/src/core/server/services/users/auth/invite.ts
index eb7424794..3583d60c0 100644
--- a/src/core/server/services/users/auth/invite.ts
+++ b/src/core/server/services/users/auth/invite.ts
@@ -31,6 +31,7 @@ import {
 import { constructTenantURL } from "coral-server/app/url";
 import {
   IntegrationDisabled,
+  InviteIncludesExistingUser,
   InviteRequiresEmailAddresses,
   InviteTokenExpired,
   TokenInvalidError,
@@ -192,16 +193,16 @@ export async function invite(
     inviteURL?: string;
     invitedNow?: Invite;
   }> = [];
+
+  // check to make sure users have not been invited previously
   for (const email of uniq(emails)) {
-    // Check to see if the user with the specified email already has an account.
     const userAlready = await retrieveUserWithEmail(mongo, tenant.id, email);
     if (userAlready) {
-      payloads.push({ email });
-      continue;
+      throw new InviteIncludesExistingUser(email);
     }
+  }
 
-    // Check to see that the user has not been invited before, if they have,
-    // redeem it and create a new one.
+  for (const email of uniq(emails)) {
     await redeemInviteFromEmail(mongo, tenant.id, email);
 
     // Create the User invite record.