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How To Mark All As Read in Outlook App

Outlook Email App

“Outlook” is a widely-used online email sending and receiving service available in more than 160 countries. “Outlook” has an app that you can use to access thousands of emails quickly. However, a few users find it hard to mark all these emails as read on the application.

Quick Answer

To mark all as read in the “Outlook” app:

1) If you are using the “Outlook Web” and “365 Desktop Client” app, select all the emails in any folder by pressing “CTRL + A”, right-click on the selected messages, and tap on “Mark as Read”.
2) On iOS, launch the “Outlook” app, go to “Edit”, and select all messages. Next, tap on “Mark All”, and select “Mark as read”. 
3) If you have “Outlook” installed on Android, select emails one by one to mark them as read. 

We took the time to write an easy guide on marking all as read in the “Outlook” app with quick step-by-step methods. We’ll also discuss marking an entire folder as read in this write-up.

Methods for Marking All As Read in Outlook App

If you are wondering how to mark all as read in the “Outlook” app, our four step-by-step methods will aid you in performing this task without much hassle.

Method #1: Outlook Android App

It is possible to mark all emails as read in the “Outlook” Android App. To do this:

  1. Launch the “Outlook” mobile app on Android and sign in to your account.
  2. From the “Inbox”, tap and hold any email until you see a checkmark appearing to its left.
  3. Tap and select every email you want to mark as read.
  4. With the mails selected, choose the three dots in the upper right corner and tap “Mark as Read”.
    Image 338

All the emails you have selected will appear as read now in the Android “Outlook” app.

Method #2: Outlook Web App

You can also mark all emails as read in the “Outlook” Web App. Here is how:

  1. Open “Outlook for the Web” and sign in to your account.
  2. While in the Inbox folder, press Ctrl + A or choose the “Select All” icon for selecting all emails.
    Image 339
  3. Right-click on any of the selected mails and choose “Mark as read”.
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  4. You can mark all your emails as read by right-clicking on them separately.

Method #3: Outlook 365 Desktop Client

Marking all emails as read in the “Outlook 365 Desktop Client” is almost the same as marking them in the Web App. For this:

  1. Head to the “Outlook 365 Desktop Client” on your PC.
  2. Sign in to your account by putting in your email and password.
  3. Press Ctrl + A buttons while in the “Inbox” tab to select all emails.
  4. Right-click the selected emails and select the “Mark as read” option.
    Image 341

All the selected emails on “Outlook 365 Desktop Client” that were previously shown as unread will now appear as read.

Method #4: Outlook iOS App

On your iPhone, follow the following steps for marking all as read in the “Outlook” app:

  1. Locate and open your iPhone’s “Mail” application.
  2. From the top right corner, choose “Edit”.
  3. You will now see the “Select All” option at the top left corner. Tap on it.
  4. Select “Mark All” from the bottom left and choose “Mark as Read”.

All your unread emails on the “iOS Outlook” app will now successfully be marked as read.

Using Custom Search Folder

Another method of marking all as read in the “Outlook” app is through the Custom Search Folder. Follow the steps below for this:

  1. Open the “Outlook” application on your computer or laptop.
  2. Locate the “Search Folder” option from the “Navigation” section and click on it. Choose the “New Search Folder”.
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  3. Next, select the email address from the “Reading Mail” section (if you are using multiple emails) and click “OK”.
    Image 344
  4. This will create an unread folder. Right-click on it and choose “Mark All as Read”.
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  5. All the unread emails are now marked as read with just a single click.

Marking an Entire Folder As Read in Outlook App

For marking a complete folder as read in your “Outlook” app, follow the steps mentioned below:

  1. Open the “Outlook” App on your laptop or desktop.
  2. From the “Personal Folders” pane, select a folder.
  3. Right-click on the folder and select “Mark All as read”.
    Image 346

Wait till the email count number in the blue disappears next to the folder name. If you no longer see the number, you have successfully marked the folder as read.


In this write-up on marking all as read in the “Outlook” app, we have discussed several methods you can use to make your emails appear read. We have also elaborated on marking an entire folder as read in the “Outlook” application.

Hopefully, one of these methods has worked for you, and now you can successfully enjoy a much cleaner “Outlook” interface. 

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