With the help of Enter key, you can count the total number of selected emails as follows.

1. In the Mail view, select the email messages that you want to count, and press the Enter key in the keyboard.

2. Then a prompt dialog will pop up. You can see the total number of the selected emails is listed. Please click No button to close the dialog.

Notes:
(1) This method cannot work when you select less than 4 email messages.
(2) This method requires the Show as Conversations option unchecked on the View tab.

One click to count total number of selected emails in Outlook with an amazing tool

There might be many tricks to count the total number of selected emails in an Outlook folder. But here I will introduce the easiest solution – Count Selected Items of Kutools for Outlook, which can help you one click to get the count result!

With VBA code, you can easily count the total number of selected emails.

1. In the Mail view, select the emails that you want to count the total number.

2. Press Alt + F11 keys simultaneously to open the Microsoft Visual Basic for Applications by .

3. Click Insert > Module to open a new Module window, and then paste below code into the window.

VBA: Count selected emails

Sub CountSelectedItems()
    Dim objSelection As Outlook.Selection
    Set objSelection = Application.ActiveExplorer.Selection
    MsgBox "Number of selected items: " & _
                objSelection.Count, vbInformation, "Selected Items"
End Sub

4. Click the Run button to run the VBA code. And now a dialog will pop up to tell you how many items you have selected. Then click OK button to close it. See screenshot:

Note: This VBA code was successfully tested in Outlook 2007, 2010, 2013, and 2016.

If you have Kutools for Outlook installed, you can apply its Count Selected Items feature to count the total number of all selected email with only click easily in Outlook.

1. Open the specified mail folder, and select the emails you will count.
Note:
Holding the Ctrl key, you can select multiple nonadjacent emails by clicking them one by one;
Holding the Shift key, you can select multiple adjacent emails by clicking the first email and the last one;
Select anyone email in the mail folder, and then press Ctrl + A keys to select all emails in the mail folder.

2. Click Kutools Plus > Count Selected Items.

Then you will get the total number of selected emails at a glance in the popping out dialog.

If you have Kutools for Outlook installed, you can apply its Statistics feature to count the total number of selected emails easily in Outlook. Please do as follows:

1. In the Mail view, select the emails that you will count, and click Kutools > Statistics. See screenshot:

2. In the first popping out Statistic dialog box, please click the OK button directly. And now you will get the total number of all selected email at the top of the second Statistic dialog box. See screenshot: