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How to block email with no subject or sender in Outlook?

Have you ever suffered with receiving some emails with no senders or no subject text within your Outlook? If you are painful with this problem, with this article, you may find the ways to help you to block the emails with no subject or sender in Outlook.

Block emails with no subject in Outlook with creating new rule

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arrow blue right bubble Block emails with no subject in Outlook with creating new rule

In Outlook, you can create a rule to block the blank subject messages and put them to Junk folder. Please do with the following steps:

1. Launch your Outlook, and click Home > Rules > Manage Rules & Alerts, see screenshot:

doc block blank subject 1

2. In the Rules and Alerts dialog box, click E-mail Rules tab, and select the account folder you want to apply the rule, then click New Rule option, see screenshot:

doc block blank subject 2

3. In the Rules Wizard, please select Apply rule on messages I receive from the Start from a blank rule section, see screenshot:

doc block blank subject 3

4. Then click Next button to go to the next step wizard, and go on click Next button, and a warning message will pop out, click Yes, see screenshot:

doc block blank subject 4

5. In the next wizard, check move it to the specified folder option under the Step 1, and in the Step 2 section, click the word specified and choose the Junk Email where you want to put the blank subject emails, see screenshot:

doc block blank subject 5

6. Then click OK > Next, in the next wizard, please do the following operations:

  • (1.) In the Step 1, check except if the subject contains specific words option;
  • (2.) In the Step 2, click specific words to open the Search Text box;
  • (3.) In the Search Text box, enter the letter from a to z, A to Z, and 0 to 9 into the text box and click Add button to insert these letters and numbers into the Search list box one by one.
  • doc block blank subject 6

    7. After typing the letters and numbers, please click OK > Next, and in the last wizard, specify a name for this rule as you need, and then check Turn on this rule under the Step 2 section, see screenshot:

    doc block blank subject 7

    8. At last, click Finish button to return the Rules and Alerts dialog, and click OK to take this rule effect, and from now on, when you receive emails which have no subject next time, these emails will be moved to the Junk Email folder automatically.

    Note: This rule will also block the emails which subject contain some special characters, such as Chinese characters, Latin characters, etc., except the English word and Arabic numbers.

    arrow blue right bubble Block emails with no subject or sender in Outlook with Kutools for Outlook

    The above method may be somewhat difficult and complex for us, besides, it has some limitations, in this case, I can recommend a handy tool-Kutools for Outlook, it contains some useful and powerful tools.

    Kutools for Outlook : with more than 20 handy Outlook add-ins, free to try with no limitation in 45 days. Get it Now .

    After installing Kutools for Outlook, please do as follows: ( Download Kutools for Outlook Now!  )

    1. Click Kutools > Junk > Enable Junk Email Filter to activate this feature, see screenshot:

    doc block blank subject 8

    2. After enabling this utility,from now on, when you receive the emails which have no subject, no sender, they will be moved to the Junk Email folder automatically.

    Please download Kutools for Outlook freely and try it now!

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