Office 365

How to Bounce back Emails from Unwanted Senders in Outlook for O365

How to Bounce back Emails from Unwanted Senders

The spam or unwanted emails are a constant pain in the neck as long as you have an email address. Of course, sending those emails to the junk or spam folder can be a good option, and one of the most common options used. However, what if you are looking to stop those messages from coming to your mailbox completely?

There are specific solutions available that can be helpful in many situations. Let us check out how we can bounce back the emails from an unwanted sender.

Why bounce back an email from Unwanted sender?

A valid question. Most of the email service providers have an option of marking an email as spam, and they will be directed to the junk or spam folder as the case may be. Once you have accumulated a predefined number of emails in the junk or spam folder, you will find them getting deleted automatically. So, why bounce back an email?

The fact is sending the emails to spam, and junk folders will not stop the emails from arriving into your inbox. A bounce-back will let the user know that the recipient email ID does not receive the emails.

There are several configurations used in the bounce-back messages that will allow the sender to get an impression that the email address does not exist any longer. Or the emails have been blocked and cannot be sent to the particular email address.

Is it advisable to opt for Bounceback for emails from unwanted senders?

Well, it may not be a good idea to bounce back emails from an unwanted address in some cases. There are situations where a spammer may be sending the emails using a spoofed email address. If you bounce the email address, you may end up bouncing back the spoofed email address.

Some experts suggest opting for the solution where you can block the sender. Of course, you can even attempt sending an automatic reply indicating that the email address does not receive the emails from that particular address. They may not look like the real bouncing messages that arrive actually from the mail servers but can help you get the things done.

How to bounce back emails from unwanted user on Outlook?

Now that we are specifically discussing the possibility of bouncing back an email on Outlook on Office 365, we will initially be focussed on that option first. To begin with, unfortunately, Outlook does not have an option to bounce back an email on its web version or the standalone offline version.

You can opt for blocking the sender using the following option –

  • Launch the web version of
  • Click the gear icon at the upper right corner of the page.
  • Next, click on View All Outlook Settings.
  • Locate Mail section on the left sidebar and click on Junk Mail
  • Locate the option Blocked Senders and Domains
  • Click on Add and add the email to the list of the blocked senders and domains.

This will effectively block the emails received from the sender appearing in your mailbox. However, the method may not be sufficient enough. When you remove one of the email ID or domain, the spammer will begin sending emails from another domain or email address.

One of the following options and methods should ideally work. You may need to check if it works or not in your case.

Follow the steps here. You will need to create a new rule specifying an action that will redirect or return the message to a particular address.

  • Launch from any of your favorite web browsers.
  • Click the gear icon at the upper right corner of the page.
  • Next, click on View All Outlook Settings.
  • Locate Mail section on the left sidebar and click on Rules.
  • Click on Add New Rule
  • Name the rule as something that you would want to. For instance, you can use redirect emails from xxx
  • In the Add a Condition box, enter the email address that you want to redirect.
  • Under the Add, an Action option, choose the option Redirect to in the first box and the address of the sender in the second box.
  • Save the rule by clicking on the Save option on the top right corner.

Ideally speaking, whenever you receive a message or email from an unwanted sender, you can repeat the procedure for every mail address to redirect the mail back to the sender. In fact, the message will not need you to do anything at all as the emails from the particular sender or senders will automatically be redirected to the sender.

For the exact list of rules, you can use to return a mail by specifying a particular rule can be found at Microsoft document.

In any case, the replay would not be like the ones sent by the actual mail servers when they do not find an email address and return the email.  The real feel of the bounce-back message may not be found on the method we described here. It can very well give out the fact that the email ID is live. Even if the sender can stop sending you emails realizing that their emails are not reaching the inbox at all and are redirected back to them, they will continue sharing your email details with the other email harvesters and spammers.

Any third party options to bounce back emails from unwanted senders on Outlook?

Well, there are several third-party options available that can be helpful enough in helping you get rid of the emails form unwanted sender. There are a couple of excellent email management tools that offer you access to the bouncing feature embedded within.

Let us check out a few tools that can work efficiently to assist you in opting for the bounce-back feature on your email service.


This is one of the most popular email bounce services that has been considered to be an excellent option by the users globally. It is one of the perfect standalone spam blocking services. One of the most long-standing applications in the realm of email blocking, it has been around for over ten years and has been receiving constant updates regularly.

The app is entirely free to use. It has been one of the widely used options for blocking your emails from unwanted senders. The program uses multiple methods and algorithms to arrive at the spam emails and blocks them effectively. Some of the tools used by the application would include whitelist/blacklist, filters, external spam database checking, and Bayesian statistical techniques. It also lets you bounce back the mail to the sender.

The mail ‘bounce back‘ functionality does work efficiently with almost all significant platforms like Gmail, Outlook, and Yahoo mail.

Bounce Bully

This is yet another free option to help you bounce back the emails from the unwanted senders. However, using it may be a little complicated. You may need to use a manual option to bounce back the email every time you receive a mail.

Yes, you will need to copy the entire email and paste it into the bounce box. You will also need to copy the headers and other details and then click on the Bounce or Punish buttons to return the email. You can configure the bounce message to be sent along with the mail as well. If you are opting for the Punish option, you may set the number of times you would want to send the message to the sender.

You should ideally get it working on all the major email service providers.


This should be the perfect and most straightforward option to bounce back emails from the unwanted sender. However, it is advisable to be extra careful when installing the software. Initially available as free software without hassles. It has now become a bundled software where you will be served adware if you are not careful enough.

The option for bouncing back the emails from the unwanted senders is quite simple and easy on the IncrediMail application. The functionality is built within the software. You need to click on the actions you would want to work with your email, and you should find the option to bounce back to sender option. The email will be marked for bouncing back with the appropriate settings, and you are good to go. The message will promptly be bounced back to the sender with the proper bounce message.

In Conclusion

Those were a few options that should come quite handy enough if you are interested in bouncing back the emails from unwanted senders in Outlook on Office 365 or otherwise. Do note that Outlook on its own does not offer any great functionality when it comes to using the bounce-back feature.

The option for setting up the rules through the Outlook mail settings can be quite practical. But it does not bring up the professional look that you have come to experience with the actual bounce back messages from the email service providers. We assume the third party solutions offered in this compilation should be helpful enough in arriving at the best possible solutions. Check them out and share your experiences with us.

More Reading:

Disclaimer: The Questions and Answers provided on are for general information purposes only. We make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose.

What's your reaction?

In Love
Not Sure

You may also like

Comments are closed.

More in:Office 365