How to add or change an email signature in Office 365 OWA
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Edit an email signature in Microsoft 365’s Outlook on the web

In this article I discuss how to work with email signatures in the Microsoft 365 (formerly Office 365) webmail client. To learn how to set up server-level email signatures for an entire Microsoft 365 organization see this article.

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Written by Adam the 32-bit Aardvark

Updated: May 23, 2024

Posted: July 12, 2013

How to add or change an email signature in Office 365 OWA

1. Open your Outlook on the web either by clicking the Outlook App in your Office 365 home page, or by using this direct link.

Mail option in the Office 365 top menu

2. Click the Gear icon in the upper-right corner and scroll down to select View all Outlook settings.

Accessing Microsoft 365 Outlook on the web options

3. In the navigation pane on the left, go to Mail > Compose and reply.  The email signature editor is located under the Email signature heading. Use the provided box to enter your signature text, format it and add images or hyperlinks.

Note: You can also use an email signature generator, which offers a bunch of preconfigured advanced signature templates that you can fill in with your personal data, copy into the editor in Outlook on the web and use for free.

Outlook on the web email signature editor

Note that it is not possible to create and use multiple signatures for a single mailbox.

There are two checkboxes which let you automatically add the signature to your emails:

  • Automatically include my signature on new messages that I compose – which adds the signature every time you compose a new message in Outlook on the web
  • Automatically include my signature on messages I forward or reply to – which will add the same signature whenever you continue an email conversation

Save changes and close the settings window.

Outlook on the web email signature editor 2

If you checked one or both options that automatically add a signature, it will be visible as you compose a new email (and/or a reply or forward):

Sample email signature in Microsoft 365 Outlook on the web

If you didn’t check any of these boxes, you will still be able to add your signature manually in the compose message window.

Insert signature manually in Outlook on the web

Software tip

To centrally design and deploy email signatures in Office 365 for multiple email accounts, use CodeTwo Email Signatures 365. This solution offers a number of advantages over the native Microsoft 365 email signature management method (mail flow rules) such as:

  • a built-in HTML WYSIWYG email signature template editor,
  • an easy method of adding embedded or linked images,
  • easy-to-add dynamic fields to update users’ details,
  • signatures visible when users compose emails,
  • support for all email clients and devices.

Learn more about the software


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Comments

  1. avatar
    Rao Alfred says:
    April 24, 2021 at 2:58 pm

    I would like to set up server-side webmail signatures for multiple members of a Microsoft 365 organization.

    Reply
    • avatar
      Kamil Glaser says:
      April 26, 2021 at 7:20 am

      This article provides a step-by-step guide on how to do it with native methods. It also mentions the limitations of this method and presents CodeTwo Email Signatures for Office 365 – an email signature management tool which counters native limitations and makes the whole process much easier.

      Reply
  2. avatar
    Khan says:
    June 12, 2020 at 9:58 am

    When i insert my signature in JPF (Picture) format along with Logo then signature is not showing at reeving end. Receiving of email did not see my signature email. Please resolve issue

    Reply
    • avatar
      Kamil Glaser says:
      June 15, 2020 at 7:55 am

      Hi Khan,
      JPF files are not widely supported. The easiest way to ensure your logo is displayed correctly in each email client is to convert your image to, for example, PNG or JPG format.

      Reply
  3. avatar
    Adam says:
    October 9, 2018 at 9:28 am

    Very good and interesting article!

    Reply
  4. avatar
    Abhijeet D. says:
    January 13, 2017 at 7:36 am

    I want to use different signatures for new mail and to replies just like the option in outlook app. But here I can use only one signature. Please help me with this.

    Reply
    • avatar
      Paweł Krzemiński says:
      January 13, 2017 at 11:27 am

      Hi Abhijeet,

      I’m not aware of a way to do this in OWA. You may need to use a 3rd party application. See this article for details: https://www.codetwo.com/blog/add-signature-with-image-in-first-email-and-text-only-footer-in-replies/

      Reply
  5. avatar
    mistrzipan says:
    November 21, 2016 at 8:49 pm

    Outdated, now it looks different

    Reply
    • avatar
      Paweł Krzemiński says:
      November 22, 2016 at 8:14 am

      Hi mistrzipan, Correct. We will be updating the article in the near future.

      Reply
  6. avatar
    Shane Thormahlen says:
    November 7, 2016 at 11:37 pm

    Some how our users are set to not be able to add a signature on their OWA account. Where do I go to allow them to add this?

    Reply
    • avatar
      Paweł Krzemiński says:
      November 9, 2016 at 3:14 pm

      Hi Shane,

      Check your Outlook Web App policies in Exchange admin center (https://outlook.office365.com/ecp), permissions, Outlook Web App policies.

      When you open a policy, go to features, and click More options…. One of the options in the User experience section should be Email signature. It has to be selected for users to be able to manage email signatures.

      Reply
  7. avatar
    Neeli Noyd says:
    August 19, 2016 at 2:32 pm

    I have found where I change my email signature, but when I type it is all symbols….how do I get letters?

    Reply
    • avatar
      Milena Madej says:
      September 2, 2016 at 11:57 am

      Hi Neeli,

      It sounds like a problem with encoding but I cannot reproduce it in my environment. Do you have the same problem when e.g. creating a signature in Notepad or other editor?

      Best regards,
      Milena

      Reply
  8. avatar
    Cynthia E says:
    January 21, 2016 at 11:23 pm

    I am trying to remove a picture I put below my signature, but am not able to do so. How do I remove it?

    Reply
    • avatar
      Paweł Krzemiński says:
      January 25, 2016 at 11:49 am

      Hi Cynthia,

      Try positioning the cursor just to the right of the picture and pressing backspace on your keyboard.

      Best regards,
      Pawel

      Reply
      • avatar
        Briana Baldwin says:
        January 29, 2016 at 11:52 pm

        I am not able to place my courser to the right of the image.

        I do not even have the option to discard the whole email signature and re enter it.

        Any suggestions?

        Reply
        • avatar
          Paweł Krzemiński says:
          February 1, 2016 at 9:18 am

          Hi Briana, If you can edit the signature you should also be able to delete it. Just place the cursor anywhere within the signature editor, press CTRL+a on your keyboard and then Delete.

          Reply
  9. avatar
    Marilou says:
    January 19, 2016 at 1:57 am

    I need to delete/remove a jpg image I uploaded into my signature. I can’t find that option! Help!

    Reply
    • avatar
      Paweł Krzemiński says:
      January 25, 2016 at 12:24 pm

      Hi Marilou, Try placing your cursor to the right of the image and pressing backspace on your keyboard.

      Reply
  10. avatar
    Maddy says:
    October 29, 2015 at 4:03 pm

    I’m trying to add a hyperlink to this signature, but it keeps coming up blue. Our signatures at HH are purple, so the blue doesn’t look good. I can’t simply highlight the text and click the color, how can I get the hyperlink to be purple?

    Reply
    • avatar
      Paweł Krzemiński says:
      October 30, 2015 at 9:33 am

      Hi Maddy,

      What Internet browser are you using? And could you provide more details on why you can’t highlight the text (or what happens when you try to)?

      I’ve just tested changing the color of a hyperlink on Chrome, FF and IE. The best effect was on Chrome – both the text and underline color in the hyperlink could be changed. In FF and IE the underline remained blue.

      Best regards,
      Pawel

      Reply

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