diff --git a/src/configuration/config.ts b/src/configuration/config.ts
index 34c5a4a24c2560003e0a91754e1c5cf50b8dcb2b..00bbfff6d98d45181cad4ed3e58d048e1467a3a5 100644
--- a/src/configuration/config.ts
+++ b/src/configuration/config.ts
@@ -25,5 +25,9 @@ export const config = {
       ejs: 'adminStructureClaim.ejs',
       json: 'adminStructureClaim.json',
     },
+    structureClaimValidation: {
+      ejs: 'structureClaimValidation.ejs',
+      json: 'structureClaimValidation.json',
+    },
   },
 };
diff --git a/src/mailer/mail-templates/structureClaimValidation.ejs b/src/mailer/mail-templates/structureClaimValidation.ejs
new file mode 100644
index 0000000000000000000000000000000000000000..eca79ec7fe230a7dd947880ee5795c57cd1647cc
--- /dev/null
+++ b/src/mailer/mail-templates/structureClaimValidation.ejs
@@ -0,0 +1,6 @@
+Bonjour<br />
+<br />
+La demande de rattachement de structure a votre compte a été <strong><%= status %></strong>.
+<br />
+<br />
+Ce mail est un mail automatique. Merci de ne pas y répondre.
diff --git a/src/mailer/mail-templates/structureClaimValidation.json b/src/mailer/mail-templates/structureClaimValidation.json
new file mode 100644
index 0000000000000000000000000000000000000000..bdcb607dc59c9beed42c21a607287be19c06e217
--- /dev/null
+++ b/src/mailer/mail-templates/structureClaimValidation.json
@@ -0,0 +1,3 @@
+{
+  "subject": "Votre demande de rattachement, Réseau des Acteurs de la Médiation Numérique de la Métropole de Lyon"
+}
diff --git a/src/users/users.service.ts b/src/users/users.service.ts
index 649ed4c889ea783c57acba0117029bd1f0630593..c4c4a5a252967c2f76f40cb35cd3f1990cb99b25 100644
--- a/src/users/users.service.ts
+++ b/src/users/users.service.ts
@@ -13,7 +13,7 @@ import { EmailChangeDto } from './dto/change-email.dto';
 
 @Injectable()
 export class UsersService {
-  constructor(@InjectModel(User.name) private userModel: Model<IUser>, private mailerService: MailerService) {}
+  constructor(@InjectModel(User.name) private userModel: Model<IUser>, private readonly mailerService: MailerService) {}
 
   /**
    * Create a user account
@@ -126,7 +126,7 @@ export class UsersService {
   }
 
   /**
-   * Generate activation token and send it to user by email, in order to validate
+   * Send to all admins validation email for structures
    * a new account.
    * @param user User
    */
@@ -144,6 +144,23 @@ export class UsersService {
     });
   }
 
+  /**
+   * Send approval email for user
+   * a new account.
+   * @param user User
+   */
+  private async sendStructureClaimApproval(userEmail: string, status: boolean): Promise<any> {
+    const config = this.mailerService.config;
+    const ejsPath = this.mailerService.getTemplateLocation(config.templates.structureClaimValidation.ejs);
+    const jsonConfig = this.mailerService.loadJsonConfig(config.templates.structureClaimValidation.json);
+
+    const html = await ejs.renderFile(ejsPath, {
+      config,
+      status: status ? 'accepté' : 'refusée',
+    });
+    this.mailerService.send(userEmail, jsonConfig.subject, html);
+  }
+
   /**
    * Check that the given token is associated to userId. If it's true, validate user account.
    * @param userId string
@@ -309,6 +326,7 @@ export class UsersService {
     validate: boolean
   ): Promise<{ userEmail: string; structureId: number }[]> {
     const users = await this.findOne(userEmail);
+    let status = false;
     if (!users) {
       throw new HttpException('User not found', HttpStatus.NOT_FOUND);
     }
@@ -317,7 +335,10 @@ export class UsersService {
       // If it's a validation case, push structureId into validated user structures
       if (validate) {
         users.structuresLink.push(structureId);
+        // Send validation email
+        status = true;
       }
+      this.sendStructureClaimApproval(userEmail, status);
       await users.save();
       return this.getPendingStructures();
     } else {