diff --git a/src/mailer/mailer.service.ts b/src/mailer/mailer.service.ts
index 45bd33638ba0f05fe4a7bc99c17e0041675244d6..833908295aab54f1bcab9bbbb4d4e79f1056c9c9 100644
--- a/src/mailer/mailer.service.ts
+++ b/src/mailer/mailer.service.ts
@@ -37,7 +37,7 @@ export class MailerService {
         })
         .subscribe(
           (body) => {
-            Logger.log(`Send mail - success : ${subject}`, 'Mailer');
+            Logger.log(`Send mail to ${JSON.stringify(emailsToSend)} - success : ${subject}`, 'Mailer');
             return resolve(body.data);
           },
           (err) => {
diff --git a/src/structures/services/structures.service.ts b/src/structures/services/structures.service.ts
index c1642bc4ec3055e99890082c1f6f33ade28af6bb..fcd1595ff695529b5c866899ba71355734e28144 100644
--- a/src/structures/services/structures.service.ts
+++ b/src/structures/services/structures.service.ts
@@ -1442,12 +1442,18 @@ export class StructuresService {
     ownerList
       .filter((x) => x != undefined)
       .forEach(async (data) => {
-        this.userService.findOne(data.owner.email).then((user) => {
+        this.userService.findOne(data.owner.email).then(async (user) => {
           // If mail is already sent, do not resend
           if (user.structureOutdatedMailSent.includes(data.structure._id)) {
             return;
           } else {
-            this.sendOutdatedEmailToUser(data.owner.email, data.structure.structureName, data.structure._id);
+            try {
+              // Send mails sequentially because multiple simultaneous calls to send mail causes connect ETIMEDOUT error and container restart
+              await this.sendOutdatedEmailToUser(data.owner.email, data.structure.structureName, data.structure._id);
+            } catch (error) {
+              this.logger.error(`Couldn't send email to ${data.owner.email}. Error: ${error}`);
+            }
+
             user.structureOutdatedMailSent.push(data.structure._id);
             user.save();
           }