diff --git a/packages/app/src/app/(default)/login/EmailLogin.tsx b/packages/app/src/app/(default)/login/EmailLogin.tsx
index a4e5c79981..a743788fe2 100644
--- a/packages/app/src/app/(default)/login/EmailLogin.tsx
+++ b/packages/app/src/app/(default)/login/EmailLogin.tsx
@@ -4,6 +4,7 @@ import { fr } from "@codegouvfr/react-dsfr";
 import { Alert } from "@codegouvfr/react-dsfr/Alert";
 import { Button } from "@codegouvfr/react-dsfr/Button";
 import { Input } from "@codegouvfr/react-dsfr/Input";
+import { REGEX_EMAIL } from "@common/shared-domain/domain/valueObjects";
 import { Container } from "@design-system";
 import { zodResolver } from "@hookform/resolvers/zod";
 import { signIn } from "next-auth/react";
@@ -13,7 +14,10 @@ import { z } from "zod";
 import { AlertFeatureStatus, useFeatureStatus } from "../../../components/rdsfr/FeatureStatusProvider";
 
 const formSchema = z.object({
-  email: z.string().min(1, "L'adresse email est requise.").email({ message: "L'adresse email est invalide." }),
+  email: z
+    .string()
+    .min(1, "L'adresse email est requise.")
+    .regex(REGEX_EMAIL, { message: "L'adresse email est invalide." }),
 });
 
 type FormType = z.infer<typeof formSchema>;
diff --git a/packages/app/src/common/core-domain/dtos/ReferentDTO.ts b/packages/app/src/common/core-domain/dtos/ReferentDTO.ts
index d7984591b9..62828a614d 100644
--- a/packages/app/src/common/core-domain/dtos/ReferentDTO.ts
+++ b/packages/app/src/common/core-domain/dtos/ReferentDTO.ts
@@ -1,9 +1,10 @@
 import { COUNTIES_IDS, REGIONS_IDS } from "@common/dict";
+import { REGEX_EMAIL } from "@common/shared-domain/domain/valueObjects";
 import { z } from "zod";
 
 const substituteSchema = z.object({
   name: z.string().optional(),
-  email: z.string().email().optional(),
+  email: z.string().regex(REGEX_EMAIL, { message: "L'adresse email est invalide." }).optional(),
 });
 const baseReferentSchema = z.object({
   county: z.enum(COUNTIES_IDS).optional(),
@@ -14,7 +15,7 @@ const baseReferentSchema = z.object({
 });
 const emailReferentSubSchema = {
   type: z.literal("email"),
-  value: z.string().email(),
+  value: z.string().regex(REGEX_EMAIL, { message: "L'adresse email est invalide." }),
 };
 const emailReferentSchema = baseReferentSchema.extend(emailReferentSubSchema);
 const emailReferentPartialSchema = baseReferentSchema.partial().extend(emailReferentSubSchema);
diff --git a/packages/app/src/common/shared-domain/domain/valueObjects/Email.ts b/packages/app/src/common/shared-domain/domain/valueObjects/Email.ts
index d9d112a417..4898e96874 100644
--- a/packages/app/src/common/shared-domain/domain/valueObjects/Email.ts
+++ b/packages/app/src/common/shared-domain/domain/valueObjects/Email.ts
@@ -1,6 +1,6 @@
 import { SimpleStringValueObject } from "./SimpleStringValueObject";
 
-const REGEX_EMAIL = /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/i;
+export const REGEX_EMAIL = /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/i;
 
 export class Email extends SimpleStringValueObject<Email> {
   constructor(email: string) {
diff --git a/packages/app/src/pages/ajout-declarant.tsx b/packages/app/src/pages/ajout-declarant.tsx
index 280eac9099..8f7bd85d60 100644
--- a/packages/app/src/pages/ajout-declarant.tsx
+++ b/packages/app/src/pages/ajout-declarant.tsx
@@ -1,7 +1,9 @@
 import { Siren } from "@common/core-domain/domain/valueObjects/Siren";
 import { type CreateOwnershipRequestDTO } from "@common/core-domain/dtos/CreateOwnershipRequestDTO";
 import { type ValidationError } from "@common/shared-domain";
+import { Email, REGEX_EMAIL } from "@common/shared-domain/domain/valueObjects";
 import { getDuplicates } from "@common/utils/array";
+import { zodValueObjectSuperRefine } from "@common/utils/zod";
 import { AlertFeatureStatus, FeatureStatusProvider, useFeatureStatus } from "@components/FeatureStatusProvider";
 import { BasicLayoutPublic } from "@components/layouts/BasicLayoutPublic";
 import {
@@ -34,7 +36,7 @@ const zodUniqueEmailArray = z.string().transform((val, ctx) => {
   const messages: string[] = [];
   for (const v of splitted) {
     try {
-      z.string().email().parse(v);
+      z.string().regex(REGEX_EMAIL).parse(v);
     } catch {
       messages.push(`L'adresse email "${v}" est invalide.`);
     }
@@ -92,7 +94,7 @@ const zodUniqueSirenArray = z.string().transform((val, ctx) => {
 });
 
 const formSchema = z.object({
-  askerEmail: z.string().email({ message: "L'adresse email est invalide." }),
+  askerEmail: z.string().superRefine(zodValueObjectSuperRefine(Email, "L'adresse email est invalide.")),
   emails: zodUniqueEmailArray,
   sirens: zodUniqueSirenArray,
 });
diff --git a/packages/app/src/pages/representation-equilibree/declarant.tsx b/packages/app/src/pages/representation-equilibree/declarant.tsx
index 132c4cd97c..0626a85d41 100644
--- a/packages/app/src/pages/representation-equilibree/declarant.tsx
+++ b/packages/app/src/pages/representation-equilibree/declarant.tsx
@@ -1,3 +1,4 @@
+import { REGEX_EMAIL } from "@common/shared-domain/domain/valueObjects";
 import { AlertEdition } from "@components/AlertEdition";
 import { RepresentationEquilibreeLayout } from "@components/layouts/RepresentationEquilibreeLayout";
 import {
@@ -28,7 +29,7 @@ const formSchema = z.object({
     .string()
     .min(1, { message: "Le téléphone est requis" })
     .regex(/\d{10}/gi, "Le numéro de téléphone doit être composé de 10 chiffres"),
-  email: z.string().email(),
+  email: z.string().regex(REGEX_EMAIL, { message: "L'adresse email est invalide." }),
   accord_rgpd: z.boolean().refine(accord_rgpd => accord_rgpd, { message: "L'accord est requis" }),
 });
 
diff --git a/packages/app/src/pages/representation-equilibree/email.tsx b/packages/app/src/pages/representation-equilibree/email.tsx
index 5f06c7165b..b51adc4095 100644
--- a/packages/app/src/pages/representation-equilibree/email.tsx
+++ b/packages/app/src/pages/representation-equilibree/email.tsx
@@ -1,3 +1,4 @@
+import { REGEX_EMAIL } from "@common/shared-domain/domain/valueObjects";
 import { normalizeRouterQuery } from "@common/utils/url";
 import { ClientOnly } from "@components/ClientOnly";
 import { AlertFeatureStatus, FeatureStatusProvider, useFeatureStatus } from "@components/FeatureStatusProvider";
@@ -24,7 +25,10 @@ import { type NextPageWithLayout } from "../_app";
 const title = "Validation de l'email";
 
 const formSchema = z.object({
-  email: z.string().min(1, "L'adresse email est requise.").email({ message: "L'adresse email est invalide." }),
+  email: z
+    .string()
+    .min(1, "L'adresse email est requise.")
+    .regex(REGEX_EMAIL, { message: "L'adresse email est invalide." }),
 });
 
 // Infer the TS type according to the zod schema.