centralize email parsing logic

server/commands/userProvisioner.ts

@@ -1,5 +1,6 @@
 import { InferCreationAttributes } from "sequelize";
 import { UserRole } from "@shared/types";
+import { parseEmail } from "@shared/utils/email";
 import InviteAcceptedEmail from "@server/emails/templates/InviteAcceptedEmail";
 import {
   DomainNotAllowedError,
@@ -226,7 +227,7 @@ export default async function userProvisioner({
 
     // If the team settings do not allow this domain,
     // throw an error and fail user creation.
-    const domain = email.split("@")[1];
+    const { domain } = parseEmail(email);
     if (team && !(await team.isDomainAllowed(domain))) {
       throw DomainNotAllowedError();
     }