How to Fix iOS 13 Mail Outlook Duplicate Sent Items

Do you have duplicate sent items (emails) for Outlook inside your iOS 13 Mail app?

Apparently, several users have been experiencing the same issue, especially those who have an email account. These users have been seeking answers on the Apple Support Community page.

Now thankfully, these sent emails are not duplicated in the server folder. This means that you don’t have to worry about your 15GB Outlook storage that is given for Free users or 50GB Outlook storage if you’re on either Microsoft 365 Family and Microsoft 365 Personal subscriptions being depleted.

However, it is still frustrating that you need to delete your sent email twice. Your local storage though is the one you have to worry about. If this goes on, there will be twice as many items on your sent messages folder. You will need to find a fix before it gets worst and floods your ‘Sent’ folder on your iOS device with duplicate entries.

Don’t worry. We got you covered today. Our topic for today will help you fix your ‘iOS 13 Mail Outlook duplicate sent items’ issue, step-by-step. We will also include the potential causes of this issue so you can understand how it will be fixed.

Let’s get started!


1. Disable Always BCC Myself Feature.

Blind Carbon Copy (or BCC in short) is a feature in your Mail app which you can use if you don’t want the recipients to know that you sent a copy of the email to another person.

Common examples include business owners who would often want to be included in the email loop but don’t want their email visible so that the email recipients for privacy purposes.

When this feature is enabled on your Mail app, it will automatically send another copy to your email address. This might be the reason why you are having duplicate sent email messages on your Sent folder. To fix this and avoid this from happening again, make sure that you disable it.

Here’s how you can do it:

  1. Go ahead and open the Settings of your iOS 13 device.
  2. Then, find and tap the Mail option to open the mail settings.
  3. Now, scroll down to the Composing section and check the Always BCC myself option to it is enabled. If so, toggle the button beside it to disable the feature.

iOS 13 Mail Outlook Duplicate Sent Items


  1. Finally, close the Mail application and relaunch it.

Now that you have disabled the said feature, you will no longer be sending another copy to yourself every time you try to send an email message. With this, it should stop the duplicate email messages from appearing inside the ‘Sent’ folder on your Mail app.



2. Change Push to Fetch in Mail Account Settings.

The ‘Push settings” in your Mail app is used for the real-time updates of your mail messages.

It makes use of a small data to talk to your email server so it may download or upload any new email messages. On the other hand, the ‘Fetch’ setting is constantly connecting to your email server like any other mail application. It requires a lot of data transfer and bandwidth, which can drain your battery faster.

The ‘Push settings’ in your Mail app may be having a glitch which can cause these duplicate sent emails. In the meantime that Apple is still working on a fix, you can opt to use the ‘Fetch’ setting for now. But if you are worried about your battery being drained faster, we will include a workaround below on that as well.

Here’s how you can change your Mail app ‘Push settings’:

  1. Go ahead and open the Settings app on your iPhone or iPad.
  2. Then, tap Passwords & Accounts option and then tap on the Fetch New Data option. It’s at the bottom.

iOS 13 Mail Outlook Duplicate Sent Items


  1. Now on the Email Account list, tap on your Outlook account and tap on the Fetch option.

iOS 13 Mail Outlook Duplicate Sent Items


  1. After that, go back to the previous page and scroll down. You can set the Fetch schedule to Every 15 minutes. This will minimize the frequent connection to the Mail server and save your battery. Additionally, you will also want to make sure that the Push option is turned on (at the top) as well which will stabilize the connection with the email server so that you get updates instantaneously when they are received.

iOS 13 Mail Outlook Duplicate Sent Items


  1. Finally, close your Mail app and relaunch the application.

Having set the Mail app setting to ‘Fetch’, you have worked around the glitch of the Push setting in your Mail app while also conserving your device’s battery usage.



3. Restart Your Device.

Your Mail app can stop functioning correctly if your device does not have any resources to spare to perform additional tasks.

This usually happens when your device has been running for a long time which causes the memory and processor to be maxed out. To fix it, you must restart your device.

Simply tap open the Settings app on your iPhone (or iPad), then tap on General. Scroll a little down the page and then tap on the Shut Down option.


iOS 13 Mail Outlook Duplicate Sent Items


After that you should see the Slide to Power Off screen which all you need to do is drag the slider to confirm the process.

Once your device is completely off, turn it back on and try to send a test email on your Mail app. See if the test email get’s duplicated in your ‘Sent’ folder.



4. Remove Device from

It is also possible that this issue is caused by corrupted sync settings between your iOS 13 and your Outlook email server.

This usually happens when your Mail app was in the middle of a sync process and got terminated prematurely. To fix this issue, you may need to rebuild the settings by deleting your iOS 13 profile from the server and sync again.

According to Microsoft Support, here’s how you can do it:

  1. Go ahead and sign in your account on the Outlook website using your web browser.

Microsoft Outlook (


  1. Then, click on the Settings option and then click on View all Outlook Settings.

iOS 13 Mail Outlook Duplicate Sent Items


  1. Now click on General option and then Mobile devices option.
  2. On the list of devices, select your iOS 13 device and click on the trashcan icon to delete the profile.

iOS 13 Mail Outlook Duplicate Sent Items


  1. Next, scroll up at the top of the page and click on Save.
  2. Finally, restart your iOS 13 device and sync your Mail app again.

If you are using a classic view on your Outlook Web Access, then learn more on how to delete your device in classic layout settings. But by doing this process, your Mail app should be able to sync correctly with your Outlook mail server and in part solving the duplicate sent email issues.



5. Delete and Re-Add Email Account.

There is also the possibility that your account settings on your Mail app may have been corrupted.

Since Apple and Microsoft are both constantly updating their products, sometimes it may result in a conflict of settings. To fix this, you may need to remove the existing email settings of your Outlook mail on your Mail app. After that, you can add it back to rebuild the Outlook account settings.

Here’s how you can do it:

  1. Open the Settings app on your device and then tap on the Passwords & Accounts option.
  2. Then, scroll down to the Accounts section and select your Outlook email account.
  3. Now, tap the Delete Account button at the bottom (as shown below).

iOS 13 Mail Outlook Duplicate Sent Items


  1. Next, tap on Delete from My iPhone to confirm the process and then restart your iOS 13 device.

iOS 13 Mail Outlook Duplicate Sent Items


  1. After your iOS 13 has successfully started, go back into the Settings app and then tap on the Passwords & Account option again.
  2. Now you will need to select the Add Account option and choose (as shown below).

Add Account to Mail App


  1. Type in your email address and password in the space provided. Make sure you have spelt it correctly and with the correct case!
  2. Finally, tap on the Next option and wait for the verification process. You may follow the remaining on-screen steps provided before tapping Save to save your changes.

Now that you have rebuilt your account settings for your Outlook email in your Mail app, errors between the app and the mail server have been fixed. Once again, test by sending an email and see if the email is duplicated in the ‘Sent’ inbox.



6. Update to the Latest iOS Version (iOS 13.3 Fixes This Issue).

It is also common for iPhones and iPads to have bugs that originate from within the software itself.

You will have to deal with the reality that your iOS device is partly made of codes that should work correctly but may still contain imperfections. Which is why, most of the time, it’s a good idea to stay on top of updates for your Apple device as the updates bring fixes for such issues.

But before you go through with updating your iOS device, make sure you have a backup of your iPhone or iPad on your iCloud or computer. Once you’ve made the backup, you can go through the steps below to update your iOS (iPhone) or iPadOS (iPad).

Here’s how you update your iPhone or iPad to the latest version:

  1. First, plug-in your iOS device into a stable power source and connect to the internet using Wi-Fi.
  2. Then on your iOS device, go into your Settings app and then tap on General.
  3. Next, choose the Software Update option.

iOS 13 Mail Outlook Duplicate Sent Items


  1. Now, choose and tap Download and Install. When prompted that you will be temporarily removing apps because of space requirements for the update, tap Continue. Don’t worry as your device will reinstall all of the apps that were removed through the process.
  2. After that, tap Install to install now.
  3. Finally, if you are asked to enter your passcode, make sure that you have the correct one.

iOS 13.3.1 Update


By doing this, you have obtained the latest bug fixes that should effectively stop the duplicate sent email messages appearing in your Mail app on your iOS 13 device.



7. Contact Apple Support.

Lastly, if none of the solutions in this guide has worked to fix the issue, then we highly recommend reaching out to Apple’s Support to solve it as they can access your device. There is no cost involved to have them inspect the device. Since this issue is mostly a software issue, you shouldn’t need to pay anything to have it fixed.

You can also choose to submit a feedback to Apple Support. This is to help Apple Developers to sort out what type of iOS 13 devices are having this issue. You will be helping them resolve bugs and glitches much faster if they have these details. But if you wish to talk to an Apple representative over the phone, feel free to contact them.


Apple Support


Apple-certified technicians can also help you out with some advance troubleshooting steps to resolve this issue. They can check your iOS 13 device from the software part down to the hardware issues. Be sure to visit them at your nearest Apple Store. Again, it’s free to have your device inspected.

As we end this article, we sure hope that we were able to help you with how to fix your “iOS 13 Mail Outlook duplicate sent items” issue. Thanks for reading our guide and for your unending support. If you have questions related to this topic, please feel free to leave a comment below.


If this guide helped you, please share it. 🙂



  • Jake Kovoor

    Jake is the Editor-in-Chief of Saint and an independent software developer, with a Bachelors in Computer Science from Lancaster University, UK. He loves trying out various tech from the Flipper Zero to coding Raspberry Pis for automation. He started Saint back in 2016, having written over 100 posts, with the sole purpose of creating guides for software that had yet to exist back then to help users navigate around their technical problems.

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