diff --git a/.env.template b/.env.template
index 034693c596a865bfc018a005086dbc3495bb04a1..f5ddf5f1a2595a26d41ace2f9e7779e93a422920 100644
--- a/.env.template
+++ b/.env.template
@@ -18,6 +18,7 @@ ME_CONFIG_BASICAUTH_PASSWORD=<mongo express password>
 ME_PORT=<mongo express port>
 # External API
 MAIL_URL=<SEN API url>
+MAIL_APIKEY=<API MANAGER KEY>
 MAIL_TOKEN=<SEN API token>
 MAIL_FROM=<MAIL_FROM>
 MAIL_CONTACT=<MAIL_CONTACT>
diff --git a/docker-compose.yml b/docker-compose.yml
index 6754abdd40b3c8c9b181a3fcfdf14acbb906c269..b0b041115d386dbf07b93cf0888c92e66521ecc7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -17,6 +17,7 @@ services:
       JWT_SECRET: ${JWT_SECRET}
       SALT: ${SALT}
       MAIL_URL: ${MAIL_URL}
+      MAIL_APIKEY: ${MAIL_APIKEY}
       MAIL_TOKEN: ${MAIL_TOKEN}
       MAIL_FROM: ${MAIL_FROM}
       MAIL_SOSTECH: ${MAIL_SOSTECH}
diff --git a/k8s/05-res-secret.yml b/k8s/05-res-secret.yml
index 29db86114192c83f7eb889996076a7f3af082f33..36b2a595bbc4cb3de012196686da0df46fc75c19 100644
--- a/k8s/05-res-secret.yml
+++ b/k8s/05-res-secret.yml
@@ -8,6 +8,7 @@ stringData:
   MONGO_NON_ROOT_PASSWORD: '$MONGO_NON_ROOT_PASSWORD_K8S'
   ME_CONFIG_MONGODB_ADMINPASSWORD: '$MONGODB_ROOT_PASSWORD_K8S'
   ME_CONFIG_BASICAUTH_PASSWORD: '$ME_CONFIG_BASICAUTH_PASSWORD_K8S'
+  MAIL_APIKEY: '$MAIL_APIKEY_K8S'
   MAIL_TOKEN: '$MAIL_TOKEN_K8S'
   GHOST_ADMIN_API_KEY: '$GHOST_ADMIN_API_KEY_K8S'
   GHOST_CONTENT_API_KEY: '$GHOST_CONTENT_API_KEY_K8S'
diff --git a/src/mailer/mailer.service.ts b/src/mailer/mailer.service.ts
index 833908295aab54f1bcab9bbbb4d4e79f1056c9c9..29a165573645c87cd6615a979002b225c2599322 100644
--- a/src/mailer/mailer.service.ts
+++ b/src/mailer/mailer.service.ts
@@ -25,15 +25,19 @@ export class MailerService {
     });
     formData.append('metadata', data);
     const contentLength = formData.getLengthSync();
+    const headers = {
+      'Content-Length': contentLength,
+      Authorization: 'Bearer ' + process.env.MAIL_TOKEN,
+      ...formData.getHeaders(),
+    };
+    if (process.env.MAIL_APIKEY) {
+      headers['apikey'] = process.env.MAIL_APIKEY;
+    }
     Logger.log(`Send mail to ${JSON.stringify(emailsToSend)} : ${subject}`, 'Mailer');
     return new Promise((resolve, reject) => {
       this.httpService
         .post(process.env.MAIL_URL, formData, {
-          headers: {
-            'Content-Length': contentLength,
-            Authorization: 'Bearer ' + process.env.MAIL_TOKEN,
-            ...formData.getHeaders(),
-          },
+          headers: headers,
         })
         .subscribe(
           (body) => {